Kīhei climate — normals and trends
Kīhei (United States) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 23.2 °C and it receives 371 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (25.1 °C on average) and the coldest is February (21.3 °C). Rainfall peaks in January.
Kīhei averages 0 frost days, 4 hot days (≥ 30 °C) and 61 rainy days per year.
Kīhei has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.
The hottest day of the period reached 32.0 °C (on 5 September 2019) and the coldest 14.1 °C (on 7 January 1971).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
KīheiHawaii
- coords
- 20.76°, -156.45°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.2°C
Average daily high
26.5°C
Average daily low
20.8°C
Annual rainfall
371mm
Sunshine / day
11.4h
Mean relative humidity
72%
Average peak wind
13.8km/h
Seasonal range
3.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
61 d/yr
Annual snowfall
0.0 cm
Average feels-like high
28.9 °C
Average feels-like low
22.4 °C
Average peak gust
38.4 km/h
Tropical nights (≥ 20 °C)
256 d/yr
Solar radiation
20.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °C per decade · r² = 0.53 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
32.0 °C
5 September 2019
Coldest day
14.1 °C
7 January 1971
Wettest day
161 mm
17 March 1997
Windiest day
43.3 km/h
27 January 1991
Strongest gust
101.9 km/h
31 January 1963
Hottest feels-like
37.8 °C
27 September 2019
Coldest feels-like
11.7 °C
5 March 1954
Sunniest day
13.0 h
26 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 25.8 °C | +1.3 °C | 89 mm | +20 mm |
| Feb | 25.7 °C | +1.3 °C | 29 mm | -18 mm |
| Mar | 26.6 °C | +1.8 °C | 15 mm | -36 mm |
| Apr | 27.0 °C | +1.4 °C | 63 mm | +36 mm |
| May | 27.8 °C | +1.1 °C | 9 mm | -7 mm |
| Jun | 28.5 °C | +0.9 °C | 7 mm | -3 mm |
| Jul | 28.8 °C | +0.6 °C | 9 mm | -4 mm |
| Aug | 29.4 °C | +0.9 °C | 5 mm | -10 mm |
| Sep | 29.1 °C | +0.6 °C | 9 mm | -4 mm |
| Oct | 28.5 °C | +0.7 °C | 20 mm | -6 mm |
| Nov | 27.2 °C | +0.8 °C | 20 mm | -16 mm |
| Dec | 26.7 °C | +1.6 °C | 21 mm | -29 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Kīhei?
Kīhei has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 23.2 °C and it receives 371 mm of precipitation per year.
What is the hottest day ever recorded in Kīhei?
The hottest day measured in Kīhei between 1940 and 2025 was 5 September 2019, reaching 32.0 °C.
What is the coldest day in Kīhei?
The coldest day measured in Kīhei between 1940 and 2025 was 7 January 1971, at 14.1 °C.
Does it snow in Kīhei?
Almost never: Kīhei sees virtually no snow, with about 0 frost days per year.
Has the climate of Kīhei warmed?
Yes: Kīhei warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kīhei?
The wettest day measured in Kīhei between 1940 and 2025 was 17 March 1997, with 161 mm of rain in 24 hours.
What was the windiest day in Kīhei?
The windiest day measured in Kīhei between 1940 and 2025 was 27 January 1991, with winds reaching 43.3 km/h.
What is the warmest month in Kīhei?
The warmest month in Kīhei is August (25.1 °C on average); the coldest is February (21.3 °C).
How much does it rain in Kīhei?
Kīhei receives on average 371 mm of precipitation per year, spread over about 61 rainy days.
Is it sunny in Kīhei?
Kīhei gets on average 11.4 hours of sunshine per day, roughly 4,161 hours per year over 1940-2025.
Are there tropical nights in Kīhei?
Yes: Kīhei has on average 256 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kīhei?
In Kīhei, between 1940 and 2025, the highest apparent temperature reached 37.8 °C on 27 September 2019, and the lowest was 11.7 °C on 5 March 1954.
Compare Kīhei with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kīhei