Climate Change in Kailua, Hawaii

86+ years of recorded temperature data show Kailua is warming.

Based on our analysis of 86 years of temperature data near Kailua, HI, this area shows a warming trend of approximately +0.4°F per decade. 10 of the last 10 years recorded above-average temperatures, and 2025 was the warmest year on record at +1.8°F above the historical baseline.

Key Climate Facts

Rate of Change

+0.4°F

per decade

Warmest Year

2025

+1.8°F anomaly

Recent Warm Years

10 / 10

above-average years

Decade Shift

+3.1°F

2020s vs 1940s

Compared to the National Average

Kailua is warming 0.2°F/decade faster than the national average.

National: +0.20°F/decade
Kailua: +0.38°F/decade

Climate Spiral

Each ring represents one year of monthly temperatures. Blue indicates cooler-than-average periods; red indicates warmer. The outward drift over time reveals Kailua's long-term warming trend.

Temperature anomaly spiral for Kailua, Hawaii
Climate spiral: monthly temperature anomalies from 86+ years of NOAA records for Kailua, HI.

Warming Stripes

Each vertical stripe represents one year. The color gradient from blue to red shows how annual temperatures have shifted relative to the historical average.

Warming stripes for Kailua, Hawaii
Warming stripes: each stripe is one year of average temperature anomaly for Kailua, HI.

Temperature Trend

Annual temperature anomalies plotted over time with a linear regression trend line. The slope of +0.38°F per decade quantifies the rate of change.

Temperature trend chart for Kailua, Hawaii
Linear trend: annual temperature anomalies with trend line for Kailua, HI.

Temperature by Decade

1940s
-1.98°F
1950s
-1.76°F
1960s
-0.42°F
1970s
-0.48°F
1980s
+0.09°F
1990s
+0.38°F
2000s
+0.54°F
2010s
+0.64°F
2020s
+1.16°F

Average temperature anomaly per decade relative to the historical baseline period.

Anomaly Scale

-3.1°F Colder Normal +2.2°F Warmer

Color bounds are set to the 5th and 95th percentile of anomalies to avoid outlier washout.

Monthly Temperature Records

Complete monthly temperature record for Kailua, HI. Filter by decade or download as CSV.

Data Sources & Audit

Station
HONOLULU INTERNATIONAL AIRPORT, HI US
Distance
13.5 mi
Coverage
93.8%
Records
979
Range
1940-01 – 2026-01
Gap-filled
54 from 3 stations
Full Data Audit 1,033 records
YearMonthTempBaselineAnomalySourceGap
1940Jan69.3°F72.9°F-3.7°USC00516228
1940Feb71.2°F73.0°F-1.7°USC00516228
1940Mar71.5°F74.4°F-2.9°USC00516228
1940Apr74.3°F76.0°F-1.7°USC00516228
1940May75.4°F77.6°F-2.3°USC00516228
1940Jun79.0°F79.7°F-0.7°USW00022521
1940Jul80.3°F80.8°F-0.5°USW00022521
1940Aug80.9°F81.7°F-0.8°USW00022521
1940Sep80.0°F81.4°F-1.4°USW00022521
1940Oct76.7°F80.0°F-3.3°USC00516228
1940Nov74.9°F77.5°F-2.6°USC00516228
1940Dec72.5°F74.5°F-2.0°USC00516228
1941Jan71.2°F72.9°F-1.7°USC00516228
1941Feb69.9°F73.0°F-3.0°USC00516228
1941Mar72.5°F74.4°F-1.9°USW00022521
1941Apr73.8°F76.0°F-2.3°USC00516228
1941May75.8°F77.6°F-1.9°USW00022521
1941Jun79.0°F79.7°F-0.7°USW00022521
1941Jul79.9°F80.8°F-0.9°USW00022521
1941Aug80.9°F81.7°F-0.7°USW00022521
1941Sep81.0°F81.4°F-0.4°USW00022521
1941Oct76.5°F80.0°F-3.5°USC00516228
1941Nov74.3°F77.5°F-3.2°USC00516228
1941Dec70.9°F74.5°F-3.6°USC00516228
1942Jan70.6°F72.9°F-2.4°USC00516228
1942Feb71.1°F73.0°F-1.9°USC00516228
1942Mar67.4°F74.4°F-7.0°USC00516228
1942Apr70.1°F76.0°F-5.9°USC00516228
1942May74.2°F77.6°F-3.4°USC00516228
1942Jun75.1°F79.7°F-4.6°USC00516228
1942Jul75.9°F80.8°F-4.9°USC00516228
1942Aug76.5°F81.7°F-5.1°USC00516228
1942Sep80.7°F81.4°F-0.7°USW00022521
1942Oct79.5°F80.0°F-0.5°USW00022521
1942Nov77.8°F77.5°F+0.3°USW00022521
1942Dec75.9°F74.5°F+1.4°USW00022521
1943Jan73.6°F72.9°F+0.7°USW00022521
1943Feb72.9°F73.0°F-0.1°USW00022521
1943Mar70.2°F74.4°F-4.3°USC00516228
1943Apr76.3°F76.0°F+0.2°USW00022521
1943May74.6°F77.6°F-3.1°USC00516228
1943Jun79.7°F79.7°F+0.0°USW00022521
1943Jul76.5°F80.8°F-4.3°USC00516228
1943Aug80.5°F81.7°F-1.2°USW00022521
1943Sep80.0°F81.4°F-1.4°USW00022521
1943Oct79.2°F80.0°F-0.8°USW00022521
1943Nov76.8°F77.5°F-0.7°USW00022521
1943Dec75.3°F74.5°F+0.8°USW00022521
1944Jan72.2°F72.9°F-0.8°USC00516228
1944Feb70.7°F73.0°F-2.3°USC00516228
1944Mar73.6°F74.4°F-0.8°USW00022521
1944Apr76.0°F76.0°F+0.0°USW00022521
1944May74.2°F77.6°F-3.4°USW00022519
1944Jun78.1°F79.7°F-1.6°USW00022521
1944Jul79.4°F80.8°F-1.4°USW00022521
1944Aug79.8°F81.7°F-1.8°USW00022521
1944Sep79.2°F81.4°F-2.2°USW00022521
1944Oct78.5°F80.0°F-1.5°USW00022521
1944Nov77.6°F77.5°F+0.1°USW00022521
1944Dec74.4°F74.5°F-0.1°USW00022521
1945Jan72.9°F72.9°F-0.1°USW00022521
1945Feb73.1°F73.0°F+0.1°USC00513123
1945Mar76.2°F74.4°F+1.8°USW00022521
1945Apr73.4°F76.0°F-2.7°USC00513123
1945May78.2°F77.6°F+0.5°USW00022521
1945Jun81.1°F79.7°F+1.4°USW00022521
1945Jul81.2°F80.8°F+0.4°USW00022521
1945Aug81.8°F81.7°F+0.1°USW00022521
1945Sep80.1°F81.4°F-1.2°USW00022521
1945Oct79.4°F80.0°F-0.7°USW00022521
1945Nov77.2°F77.5°F-0.3°USW00022521
1945Dec72.4°F74.5°F-2.2°USC00513123
1946Jan71.6°F72.9°F-1.3°USC00513123
1946Feb74.6°F73.0°F+1.6°USW00022521
1946Mar75.8°F74.4°F+1.4°USW00022521
1946Apr75.9°F76.0°F-0.2°USW00022521
1946May77.7°F77.6°F+0.1°USW00022521
1946Jun80.0°F79.7°F+0.3°USW00022521
1946Jul80.4°F80.8°F-0.4°USW00022521
1946Aug81.5°F81.7°F-0.2°USW00022521
1946Sep81.1°F81.4°F-0.3°USW00022521
1946Oct79.1°F80.0°F-0.9°USW00022521
1946Nov75.7°F77.5°F-1.8°USW00022521
1946Dec70.4°F74.5°F-4.2°USC00513123
1947Jan71.5°F72.9°F-1.5°USW00022521
1947Feb70.3°F73.0°F-2.7°USC00513123
1947Mar74.1°F74.4°F-0.3°USW00022521
1947Apr76.2°F76.0°F+0.2°USW00022521
1947May77.1°F77.6°F-0.5°USW00022521
1947Jun79.9°F79.7°F+0.2°USW00022521
1947Jul80.6°F80.8°F-0.2°USW00022521
1947Aug80.8°F81.7°F-0.9°USW00022521
1947Sep80.3°F81.4°F-1.1°USW00022521
1947Oct80.5°F80.0°F+0.5°USW00022521
1947Nov74.1°F77.5°F-3.4°USC00513123
1947Dec71.4°F74.5°F-3.1°USC00513123
1948Jan68.6°F72.9°F-4.3°USC00513123
1948Feb69.0°F73.0°F-3.9°USC00513123
1948Mar70.0°F74.4°F-4.4°USC00513123
1948Apr71.7°F76.0°F-4.3°USC00513123
1948May77.4°F77.6°F-0.2°USW00022521
1948Jun79.3°F79.7°F-0.4°USW00022521
1948Jul75.1°F80.8°F-5.7°USC00513123
1948Aug76.2°F81.7°F-5.5°USC00513123
1948Sep80.9°F81.4°F-0.5°USW00022521
1948Oct74.6°F80.0°F-5.4°USC00513123
1948Nov72.0°F77.5°F-5.5°USC00513123
1948Dec70.0°F74.5°F-4.5°USC00513123
1949Jan71.7°F72.9°F-1.2°USW00022521
1949Feb70.0°F73.0°F-3.0°USC00513123
1949Mar69.5°F74.4°F-5.0°USC00513123
1949Apr69.2°F76.0°F-6.9°USC00513123
1949May71.4°F77.6°F-6.3°USC00513123
1949Jun72.9°F79.7°F-6.8°USC00513123
1949Jul73.3°F80.8°F-7.6°USC00513123
1949Aug73.6°F81.7°F-8.1°USC00513123
1949Sep74.4°F81.4°F-7.0°USC00513123
1949Oct77.3°F80.0°F-2.7°USW00022521
1949Nov74.1°F77.5°F-3.4°USW00022521
1949Dec73.6°F74.5°F-0.9°USW00022521
1950Jan72.3°F72.9°F-0.6°USW00022521
1950Feb74.3°F73.0°F+1.3°USW00022521
1950Mar73.7°F74.4°F-0.7°USW00022521
1950Apr73.9°F76.0°F-2.2°USW00022521
1950May76.0°F77.6°F-1.7°USW00022521
1950Jun77.1°F79.7°F-2.6°USW00022521
1950Jul77.9°F80.8°F-2.9°USW00022521
1950Aug79.0°F81.7°F-2.7°USW00022521
1950Sep78.7°F81.4°F-2.7°USW00022521
1950Oct78.4°F80.0°F-1.6°USW00022521
1950Nov75.4°F77.5°F-2.1°USW00022521
1950Dec72.0°F74.5°F-2.5°USW00022521
1951Jan73.0°F72.9°F+0.1°USW00022521
1951Feb72.1°F73.0°F-0.9°USW00022521
1951Mar72.6°F74.4°F-1.8°USW00022521
1951Apr74.4°F76.0°F-1.6°USW00022521
1951May76.5°F77.6°F-1.2°USW00022521
1951Jun77.7°F79.7°F-2.0°USW00022521
1951Jul79.6°F80.8°F-1.3°USW00022521
1951Aug79.6°F81.7°F-2.0°USW00022521
1951Sep79.7°F81.4°F-1.7°USW00022521
1951Oct78.5°F80.0°F-1.5°USW00022521
1951Nov76.8°F77.5°F-0.7°USW00022521
1951Dec74.1°F74.5°F-0.4°USW00022521
1952Jan72.6°F72.9°F-0.3°USW00022521
1952Feb72.9°F73.0°F+0.0°USW00022521
1952Mar72.9°F74.4°F-1.6°USW00022521
1952Apr73.3°F76.0°F-2.7°USW00022521
1952May73.7°F77.6°F-3.9°USW00022521
1952Jun76.5°F79.7°F-3.2°USW00022521
1952Jul78.0°F80.8°F-2.8°USW00022521
1952Aug79.1°F81.7°F-2.6°USW00022521
1952Sep78.4°F81.4°F-3.0°USW00022521
1952Oct77.0°F80.0°F-3.0°USW00022521
1952Nov76.1°F77.5°F-1.4°USW00022521
1952Dec73.7°F74.5°F-0.9°USW00022521
1953Jan72.4°F72.9°F-0.5°USW00022521
1953Feb73.3°F73.0°F+0.3°USW00022521
1953Mar73.7°F74.4°F-0.7°USW00022521
1953Apr74.8°F76.0°F-1.3°USW00022521
1953May76.8°F77.6°F-0.9°USW00022521
1953Jun77.7°F79.7°F-2.0°USW00022521
1953Jul78.3°F80.8°F-2.5°USW00022521
1953Aug79.3°F81.7°F-2.3°USW00022521
1953Sep78.7°F81.4°F-2.6°USW00022521
1953Oct77.6°F80.0°F-2.4°USW00022521
1953Nov75.2°F77.5°F-2.3°USW00022521
1953Dec72.8°F74.5°F-1.7°USW00022521
1954Jan71.8°F72.9°F-1.1°USW00022521
1954Feb73.0°F73.0°F+0.0°USW00022521
1954Mar71.5°F74.4°F-2.9°USW00022521
1954Apr74.6°F76.0°F-1.5°USW00022521
1954May74.9°F77.6°F-2.7°USW00022521
1954Jun78.3°F79.7°F-1.4°USW00022521
1954Jul78.2°F80.8°F-2.6°USW00022521
1954Aug79.4°F81.7°F-2.2°USW00022521
1954Sep79.3°F81.4°F-2.1°USW00022521
1954Oct78.1°F80.0°F-2.0°USW00022521
1954Nov76.9°F77.5°F-0.6°USW00022521
1954Dec73.0°F74.5°F-1.6°USW00022521
1955Jan72.5°F72.9°F-0.4°USW00022521
1955Feb70.5°F73.0°F-2.5°USW00022521
1955Mar70.5°F74.4°F-3.9°USW00022521
1955Apr74.1°F76.0°F-2.0°USW00022521
1955May74.9°F77.6°F-2.7°USW00022521
1955Jun75.8°F79.7°F-3.9°USW00022521
1955Jul76.9°F80.8°F-4.0°USW00022521
1955Aug76.8°F81.7°F-4.8°USW00022521
1955Sep77.0°F81.4°F-4.4°USW00022521
1955Oct75.9°F80.0°F-4.1°USW00022521
1955Nov74.9°F77.5°F-2.6°USW00022521
1955Dec73.5°F74.5°F-1.1°USW00022521
1956Jan73.3°F72.9°F+0.4°USW00022521
1956Feb72.1°F73.0°F-0.8°USW00022521
1956Mar73.8°F74.4°F-0.6°USW00022521
1956Apr73.9°F76.0°F-2.2°USW00022521
1956May75.8°F77.6°F-1.9°USW00022521
1956Jun76.7°F79.7°F-3.0°USW00022521
1956Jul78.4°F80.8°F-2.5°USW00022521
1956Aug79.2°F81.7°F-2.4°USW00022521
1956Sep79.4°F81.4°F-2.0°USW00022521
1956Oct77.9°F80.0°F-2.1°USW00022521
1956Nov75.4°F77.5°F-2.1°USW00022521
1956Dec74.2°F74.5°F-0.3°USW00022521
1957Jan72.7°F72.9°F-0.2°USW00022521
1957Feb70.6°F73.0°F-2.4°USW00022521
1957Mar71.7°F74.4°F-2.7°USW00022521
1957Apr73.0°F76.0°F-3.0°USW00022521
1957May75.7°F77.6°F-2.0°USW00022521
1957Jun78.4°F79.7°F-1.3°USW00022521
1957Jul79.5°F80.8°F-1.4°USW00022521
1957Aug79.5°F81.7°F-2.1°USW00022521
1957Sep79.8°F81.4°F-1.6°USW00022521
1957Oct79.1°F80.0°F-0.9°USW00022521
1957Nov77.4°F77.5°F-0.1°USW00022521
1957Dec74.0°F74.5°F-0.5°USW00022521
1958Jan71.6°F72.9°F-1.4°USW00022521
1958Feb72.4°F73.0°F-0.5°USW00022521
1958Mar71.0°F74.4°F-3.4°USW00022521
1958Apr73.8°F76.0°F-2.2°USW00022521
1958May75.1°F77.6°F-2.6°USW00022521
1958Jun77.7°F79.7°F-2.0°USW00022521
1958Jul78.1°F80.8°F-2.7°USW00022521
1958Aug79.3°F81.7°F-2.3°USW00022521
1958Sep79.6°F81.4°F-1.7°USW00022521
1958Oct77.4°F80.0°F-2.6°USW00022521
1958Nov74.7°F77.5°F-2.8°USW00022521
1958Dec72.0°F74.5°F-2.6°USW00022521
1959Jan72.4°F72.9°F-0.5°USW00022521
1959Feb71.9°F73.0°F-1.1°USW00022521
1959Mar75.1°F74.4°F+0.7°USW00022521
1959Apr74.4°F76.0°F-1.6°USW00022521
1959May76.7°F77.6°F-1.0°USW00022521
1959Jun79.0°F79.7°F-0.7°USW00022521
1959Jul79.8°F80.8°F-1.1°USW00022521
1959Aug80.0°F81.7°F-1.6°USW00022521
1959Sep80.9°F81.4°F-0.5°USW00022521
1959Oct78.8°F80.0°F-1.2°USW00022521
1959Nov76.9°F77.5°F-0.6°USW00022521
1959Dec74.3°F74.5°F-0.2°USW00022521
1960Jan72.8°F72.9°F-0.1°USW00022521
1960Feb72.4°F73.0°F-0.5°USW00022521
1960Mar73.7°F74.4°F-0.7°USW00022521
1960Apr74.9°F76.0°F-1.2°USW00022521
1960May77.0°F77.6°F-0.6°USW00022521
1960Jun79.1°F79.7°F-0.6°USW00022521
1960Jul79.8°F80.8°F-1.0°USW00022521
1960Aug80.4°F81.7°F-1.2°USW00022521
1960Sep79.8°F81.4°F-1.6°USW00022521
1960Oct79.2°F80.0°F-0.8°USW00022521
1960Nov76.8°F77.5°F-0.7°USW00022521
1960Dec74.4°F74.5°F-0.1°USW00022521
1961Jan73.6°F72.9°F+0.7°USW00022521
1961Feb74.6°F73.0°F+1.6°USW00022521
1961Mar75.7°F74.4°F+1.3°USW00022521
1961Apr75.9°F76.0°F-0.1°USW00022521
1961May78.0°F77.6°F+0.3°USW00022521
1961Jun78.3°F79.7°F-1.4°USW00022521
1961Jul79.1°F80.8°F-1.7°USW00022521
1961Aug80.3°F81.7°F-1.3°USW00022521
1961Sep79.8°F81.4°F-1.5°USW00022521
1961Oct79.1°F80.0°F-0.9°USW00022521
1961Nov76.3°F77.5°F-1.2°USW00022521
1961Dec75.0°F74.5°F+0.4°USW00022521
1962Jan74.6°F72.9°F+1.7°USW00022521
1962Feb72.3°F73.0°F-0.7°USW00022521
1962Mar73.1°F74.4°F-1.3°USW00022521
1962Apr76.4°F76.0°F+0.4°USW00022521
1962May77.2°F77.6°F-0.5°USW00022521
1962Jun78.6°F79.7°F-1.1°USW00022521
1962Jul79.1°F80.8°F-1.7°USW00022521
1962Aug80.0°F81.7°F-1.7°USW00022521
1962Sep79.1°F81.4°F-2.3°USW00022521
1962Oct77.2°F80.0°F-2.8°USW00022521
1962Nov77.4°F77.5°F-0.1°USW00022521
1962Dec72.7°F74.5°F-1.8°USW00022521
1963Jan71.0°F72.9°F-1.9°USW00022521
1963Feb72.2°F73.0°F-0.8°USW00022521
1963Mar72.3°F74.4°F-2.1°USW00022521
1963Apr75.3°F76.0°F-0.8°USW00022521
1963May76.4°F77.6°F-1.2°USW00022521
1963Jun79.2°F79.7°F-0.5°USW00022521
1963Jul80.7°F80.8°F-0.2°USW00022521
1963Aug81.4°F81.7°F-0.2°USW00022521
1963Sep81.0°F81.4°F-0.4°USW00022521
1963Oct79.7°F80.0°F-0.3°USW00022521
1963Nov77.0°F77.5°F-0.5°USW00022521
1963Dec73.9°F74.5°F-0.6°USW00022521
1964Jan75.0°F72.9°F+2.1°USW00022521
1964Feb74.6°F73.0°F+1.7°USW00022521
1964Mar74.6°F74.4°F+0.2°USW00022521
1964Apr75.7°F76.0°F-0.4°USW00022521
1964May76.3°F77.6°F-1.3°USW00022521
1964Jun77.9°F79.7°F-1.8°USW00022521
1964Jul79.3°F80.8°F-1.5°USW00022521
1964Aug80.4°F81.7°F-1.3°USW00022521
1964Sep80.2°F81.4°F-1.1°USW00022521
1964Oct78.3°F80.0°F-1.8°USW00022521
1964Nov76.4°F77.5°F-1.1°USW00022521
1964Dec74.9°F74.5°F+0.3°USW00022521
1965Jan71.9°F72.9°F-1.0°USW00022521
1965Feb69.8°F73.0°F-3.1°USW00022521
1965Mar72.1°F74.4°F-2.3°USW00022521
1965Apr74.9°F76.0°F-1.1°USW00022521
1965May77.0°F77.6°F-0.6°USW00022521
1965Jun79.1°F79.7°F-0.6°USW00022521
1965Jul79.8°F80.8°F-1.0°USW00022521
1965Aug79.7°F81.7°F-2.0°USW00022521
1965Sep80.0°F81.4°F-1.4°USW00022521
1965Oct78.2°F80.0°F-1.8°USW00022521
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1994Feb73.6°F73.0°F+0.6°USW00022521
1994Mar73.1°F74.4°F-1.3°USW00022521
1994Apr76.0°F76.0°F-0.1°USW00022521
1994May79.3°F77.6°F+1.6°USW00022521
1994Jun80.9°F79.7°F+1.2°USW00022521
1994Jul82.9°F80.8°F+2.1°USW00022521
1994Aug84.3°F81.7°F+2.7°USW00022521
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1995Apr76.4°F76.0°F+0.3°USW00022521
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1995Nov80.2°F77.5°F+2.7°USW00022521
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1996Feb74.0°F73.0°F+1.0°USW00022521
1996Mar74.3°F74.4°F-0.1°USW00022521
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1996Jul82.1°F80.8°F+1.3°USW00022521
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1996Oct81.7°F80.0°F+1.7°USW00022521
1996Nov76.9°F77.5°F-0.6°USW00022521
1996Dec73.1°F74.5°F-1.5°USW00022521
1997Jan72.3°F72.9°F-0.6°USW00022521
1997Feb74.7°F73.0°F+1.7°USW00022521
1997Mar75.3°F74.4°F+0.9°USW00022521
1997Apr76.3°F76.0°F+0.3°USW00022521
1997May76.2°F77.6°F-1.5°USW00022521
1997Jun81.1°F79.7°F+1.4°USW00022521
1997Jul81.5°F80.8°F+0.7°USW00022521
1997Aug82.5°F81.7°F+0.9°USW00022521
1997Sep82.7°F81.4°F+1.3°USW00022521
1997Oct80.6°F80.0°F+0.6°USW00022521
1997Nov76.4°F77.5°F-1.1°USW00022521
1997Dec74.0°F74.5°F-0.5°USW00022521
1998Jan72.4°F72.9°F-0.5°USW00022521
1998Feb72.8°F73.0°F-0.2°USW00022521
1998Mar75.1°F74.4°F+0.7°USW00022521
1998Apr75.1°F76.0°F-0.9°USW00022521
1998May76.6°F77.6°F-1.1°USW00022521
1998Jun78.3°F79.7°F-1.4°USW00022521
1998Jul79.7°F80.8°F-1.2°USW00022521
1998Aug81.1°F81.7°F-0.6°USW00022521
1998Sep81.0°F81.4°F-0.3°USW00022521
1998Oct79.7°F80.0°F-0.3°USW00022521
1998Nov77.7°F77.5°F+0.2°USW00022521
1998Dec74.8°F74.5°F+0.2°USW00022521
1999Jan73.3°F72.9°F+0.4°USW00022521
1999Feb73.7°F73.0°F+0.7°USW00022521
1999Mar74.6°F74.4°F+0.2°USW00022521
1999Apr75.4°F76.0°F-0.6°USW00022521
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1999Jul79.3°F80.8°F-1.5°USW00022521
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1999Nov76.8°F77.5°F-0.7°USW00022521
1999Dec74.1°F74.5°F-0.4°USW00022521
2000Jan72.6°F72.9°F-0.4°USW00022521
2000Feb73.6°F73.0°F+0.7°USW00022521
2000Mar75.4°F74.4°F+1.0°USW00022521
2000Apr75.3°F76.0°F-0.7°USW00022521
2000May78.2°F77.6°F+0.6°USW00022521
2000Jun80.4°F79.7°F+0.7°USW00022521
2000Jul81.0°F80.8°F+0.2°USW00022521
2000Aug81.4°F81.7°F-0.3°USW00022521
2000Sep80.5°F81.4°F-0.8°USW00022521
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2000Nov77.5°F77.5°F+0.0°USW00022521
2000Dec74.7°F74.5°F+0.1°USW00022521
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2002Feb73.1°F73.0°F+0.1°USW00022521
2002Mar74.1°F74.4°F-0.3°USW00022521
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2002Dec75.4°F74.5°F+0.9°USW00022521
2003Jan72.5°F72.9°F-0.4°USW00022521
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2003Apr77.3°F76.0°F+1.2°USW00022521
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2003Jul82.3°F80.8°F+1.5°USW00022521
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2003Nov78.7°F77.5°F+1.3°USW00022521
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2005Feb73.8°F73.0°F+0.9°USW00022521
2005Mar73.8°F74.4°F-0.6°USW00022521
2005Apr78.7°F76.0°F+2.7°USW00022521
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2005Nov77.1°F77.5°F-0.4°USW00022521
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2006Jan74.2°F72.9°F+1.3°USW00022521
2006Feb72.1°F73.0°F-0.9°USW00022521
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2006Dec76.1°F74.5°F+1.5°USW00022521
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2007Dec75.5°F74.5°F+1.0°USW00022521
2008Jan73.6°F72.9°F+0.6°USW00022521
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2008Nov77.2°F77.5°F-0.3°USW00022521
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2009Jan72.5°F72.9°F-0.4°USW00022521
2009Feb73.4°F73.0°F+0.4°USW00022521
2009Mar73.7°F74.4°F-0.7°USW00022521
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2009Dec74.0°F74.5°F-0.5°USW00022521
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2010Feb73.0°F73.0°F+0.1°USW00022521
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2010Apr76.0°F76.0°F-0.1°USW00022521
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2010Jul79.6°F80.8°F-1.2°USW00022521
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2010Oct80.0°F80.0°F+0.0°USW00022521
2010Nov77.6°F77.5°F+0.1°USW00022521
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2011Jan73.4°F72.9°F+0.5°USW00022521
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2011Dec76.4°F74.5°F+1.9°USW00022521
2012Jan74.5°F72.9°F+1.5°USW00022521
2012Feb73.9°F73.0°F+0.9°USW00022521
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2012Jun78.7°F79.7°F-1.0°USW00022521
2012Jul79.7°F80.8°F-1.1°USW00022521
2012Aug80.7°F81.7°F-0.9°USW00022521
2012Sep80.0°F81.4°F-1.4°USW00022521
2012Oct79.4°F80.0°F-0.6°USW00022521
2012Nov75.7°F77.5°F-1.8°USW00022521
2012Dec75.1°F74.5°F+0.6°USW00022521
2013Jan72.9°F72.9°F+0.0°USW00022521
2013Feb74.8°F73.0°F+1.9°USW00022521
2013Mar73.0°F74.4°F-1.4°USW00022521
2013Apr75.9°F76.0°F-0.2°USW00022521
2013May76.8°F77.6°F-0.9°USW00022521
2013Jun78.4°F79.7°F-1.3°USW00022521
2013Jul80.3°F80.8°F-0.5°USW00022521
2013Aug81.2°F81.7°F-0.5°USW00022521
2013Sep80.7°F81.4°F-0.6°USW00022521
2013Oct78.9°F80.0°F-1.1°USW00022521
2013Nov76.8°F77.5°F-0.7°USW00022521
2013Dec75.6°F74.5°F+1.0°USW00022521
2014Jan72.7°F72.9°F-0.2°USW00022521
2014Feb74.5°F73.0°F+1.6°USW00022521
2014Mar74.7°F74.4°F+0.3°USW00022521
2014Apr77.0°F76.0°F+1.0°USW00022521
2014May78.1°F77.6°F+0.5°USW00022521
2014Jun80.1°F79.7°F+0.4°USW00022521
2014Jul82.2°F80.8°F+1.4°USW00022521
2014Aug82.4°F81.7°F+0.7°USW00022521
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2014Oct81.5°F80.0°F+1.5°USW00022521
2014Nov78.2°F77.5°F+0.7°USW00022521
2014Dec74.0°F74.5°F-0.5°USW00022521
2015Jan72.4°F72.9°F-0.5°USW00022521
2015Feb74.8°F73.0°F+1.8°USW00022521
2015Mar73.7°F74.4°F-0.7°USW00022521
2015Apr76.1°F76.0°F+0.1°USW00022521
2015May76.4°F77.6°F-1.2°USW00022521
2015Jun80.8°F79.7°F+1.1°USW00022521
2015Jul83.4°F80.8°F+2.5°USW00022521
2015Aug83.5°F81.7°F+1.8°USW00022521
2015Sep83.3°F81.4°F+1.9°USW00022521
2015Oct81.6°F80.0°F+1.6°USW00022521
2015Nov80.2°F77.5°F+2.7°USW00022521
2015Dec77.9°F74.5°F+3.3°USW00022521
2016Jan74.2°F72.9°F+1.3°USW00022521
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2016May78.8°F77.6°F+1.2°USW00022521
2016Jun79.1°F79.7°F-0.6°USW00022521
2016Jul81.1°F80.8°F+0.2°USW00022521
2016Aug81.5°F81.7°F-0.2°USW00022521
2016Sep80.5°F81.4°F-0.8°USW00022521
2016Oct79.8°F80.0°F-0.2°USW00022521
2016Nov77.4°F77.5°F-0.1°USW00022521
2016Dec74.6°F74.5°F+0.0°USW00022521
2017Jan73.5°F72.9°F+0.6°USW00022521
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2017Oct80.3°F80.0°F+0.3°USW00022521
2017Nov78.8°F77.5°F+1.3°USW00022521
2017Dec74.6°F74.5°F+0.1°USW00022521
2018Jan76.7°F72.9°F+3.8°USW00022521
2018Feb75.4°F73.0°F+2.5°USW00022521
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2018Oct80.5°F80.0°F+0.5°USW00022521
2018Nov77.5°F77.5°F+0.0°USW00022521
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2019Jan75.5°F72.9°F+2.5°USW00022521
2019Feb72.3°F73.0°F-0.7°USW00022521
2019Mar74.5°F74.4°F+0.1°USW00022521
2019Apr77.0°F76.0°F+1.0°USW00022521
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2019Jul84.1°F80.8°F+3.3°USW00022521
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2019Oct82.1°F80.0°F+2.1°USW00022521
2019Nov79.8°F77.5°F+2.3°USW00022521
2019Dec77.4°F74.5°F+2.9°USW00022521
2020Jan75.7°F72.9°F+2.8°USW00022521
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2022Feb75.0°F73.0°F+2.0°USW00022521
2022Mar76.0°F74.4°F+1.6°USW00022521
2022Apr78.2°F76.0°F+2.1°USW00022521
2022May78.2°F77.6°F+0.6°USW00022521
2022Jun80.1°F79.7°F+0.4°USW00022521
2022Jul81.1°F80.8°F+0.3°USW00022521
2022Aug81.6°F81.7°F-0.1°USW00022521
2022Sep82.0°F81.4°F+0.7°USW00022521
2022Oct80.8°F80.0°F+0.8°USW00022521
2022Nov78.6°F77.5°F+1.1°USW00022521
2022Dec75.3°F74.5°F+0.8°USW00022521
2023Jan74.4°F72.9°F+1.4°USW00022521
2023Feb76.6°F73.0°F+3.6°USW00022521
2023Mar76.9°F74.4°F+2.5°USW00022521
2023Apr78.2°F76.0°F+2.2°USW00022521
2023May78.3°F77.6°F+0.7°USW00022521
2023Jun80.6°F79.7°F+0.9°USW00022521
2023Jul81.9°F80.8°F+1.0°USW00022521
2023Aug82.6°F81.7°F+1.0°USW00022521
2023Sep82.4°F81.4°F+1.1°USW00022521
2023Oct79.4°F80.0°F-0.6°USW00022521
2023Nov77.9°F77.5°F+0.4°USW00022521
2023Dec74.3°F74.5°F-0.2°USW00022521
2024Jan73.2°F72.9°F+0.3°USW00022521
2024Feb73.7°F73.0°F+0.7°USW00022521
2024Mar75.3°F74.4°F+0.9°USW00022521
2024Apr76.2°F76.0°F+0.1°USW00022521
2024May77.6°F77.6°F-0.1°USW00022521
2024Jun80.4°F79.7°F+0.7°USW00022521
2024Jul81.2°F80.8°F+0.3°USW00022521
2024Aug82.2°F81.7°F+0.6°USW00022521
2024Sep82.3°F81.4°F+1.0°USW00022521
2024Oct81.3°F80.0°F+1.3°USW00022521
2024Nov78.0°F77.5°F+0.5°USW00022521
2024Dec77.2°F74.5°F+2.7°USW00022521
2025Jan75.1°F72.9°F+2.2°USW00022521
2025Feb75.1°F73.0°F+2.1°USW00022521
2025Mar77.8°F74.4°F+3.4°USW00022521
2025Apr79.2°F76.0°F+3.2°USW00022521
2025May80.2°F77.6°F+2.6°USW00022521
2025Jun81.0°F79.7°F+1.3°USW00022521
2025Jul81.8°F80.8°F+1.0°USW00022521
2025Aug82.9°F81.7°F+1.2°USW00022521
2025Sep82.6°F81.4°F+1.2°USW00022521
2025Oct81.3°F80.0°F+1.3°USW00022521
2025Nov78.5°F77.5°F+1.0°USW00022521
2025Dec76.2°F74.5°F+1.7°USW00022521
2026Jan74.4°F72.9°F+1.5°USW00022521

Showing 1,033 of 1,033 records. = gap-filled data

This table shows raw (unsmoothed) monthly anomalies. The spiral applies a 12-month moving average to highlight long-term trends.

Methodology

Methodology How we calculate anomalies

1. Data Acquisition

We query NOAA's Global Summary of the Month (GSOM) database for the closest weather station with good historical coverage, starting from 1930.

Temperature metric: Monthly average temperature (TAVG). When TAVG is unavailable, we use (TMAX + TMIN) / 2 as a proxy.

2. Gap Filling

Some months may have missing data. We fill gaps using data from nearby weather stations (within ~200km).

65

Initial gaps

54

Filled

11

Unfillable

Fill stations: KANEOHE BAY MCAS, HI US, KANEOHE RANCH 838, HI US, MAUNAWILI RANCH, HI US

3. Baseline Calculation

The baseline is a 25-year window dynamically centered on the data's midpoint, requiring at least 90% coverage. If coverage is insufficient, the window shifts forward in 5-year increments until the threshold is met.

Period: 1971 – 1996 (100% coverage)

MonthBaselineYears
January72.9°F26/26
February73.0°F26/26
March74.4°F26/26
April76.0°F26/26
May77.6°F26/26
June79.7°F26/26
July80.8°F26/26
August81.7°F26/26
September81.4°F26/26
October80.0°F26/26
November77.5°F26/26
December74.5°F26/26

4. Anomaly Calculation

For each month, we calculate how far it deviates from the baseline. These are raw monthly anomalies.

Anomaly = Actual Temperature − Baseline[month]

5. Smoothing

The spiral visualization applies a 12-month centered moving average to reduce month-to-month noise and highlight multi-year warming trends. The spiral shows smoothed values, not raw anomalies.

6. Reading the Visualizations

Spiral: A 3D helix where each loop represents one year. The radius indicates the smoothed temperature anomaly, and colors range from blue (cold) to red (warm). The top view shows the annual cycle, while the side view shows time progression.

Stripes: Each stripe represents one year's average anomaly (the mean of all monthly anomalies for that year). No additional smoothing is applied; yearly aggregation naturally reduces noise.

Color scale: Color bounds are set to the 5th and 95th percentile of anomalies to avoid outlier washout, with a neutral zone of approximately ±0.1°C.

7. Data Quality Notes

Time of Observation Bias (TOBS)

Early cooperative weather stations typically read their min/max thermometers in the afternoon. This meant a single hot afternoon's peak temperature could be counted in two consecutive daily readings, inflating monthly maximums.

Between the 1950s and 1980s, most stations switched to morning or midnight observation times. This eliminated the warm bias but introduced a slight cool bias during the transition.

As a result, early decades in our data may read slightly warmer than they actually were, and the transition period may show an artificial cooling dip. Neither reflects actual temperature change. We use raw GSOM data without TOBS adjustments (NOAA's adjusted products like nClimDiv correct for this, but our station-level data does not).

Frequently Asked Questions

Is Kailua, Hawaii getting warmer?

Based on 86+ years of NOAA temperature records, Kailua has warmed at a rate of approximately 0.38°F per decade. This trend is calculated from monthly temperature anomalies relative to the location's historical baseline period.

What was the warmest year on record in Kailua?

The warmest year on record in Kailua was 2025, based on average annual temperature anomaly from NOAA station data.

Where does the temperature data for Kailua come from?

Data comes from the HONOLULU INTERNATIONAL AIRPORT, HI US weather station, part of NOAA's Global Historical Climatology Network. This station has recorded 86+ years of temperature observations used to build Kailua's climate profile.

How are the climate visualizations for Kailua created?

Three visualizations are generated from Kailua's NOAA data: a climate spiral showing monthly temperature anomalies as concentric rings (inspired by NASA), warming stripes where each vertical stripe represents one year's temperature anomaly, and a linear trend chart showing the long-term trajectory.

Can I download Kailua's temperature data?

Yes. The interactive data table on this page shows every monthly temperature reading in Kailua's record. You can filter by decade and download the complete dataset as a CSV file for your own analysis.

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