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Kīhei, Hawaii climate
BSh Hot semi-arid
Kīhei has a remarkably steady tropical climate (Hot semi-arid, Köppen BSh). The hottest month is August with an average daily high near 32°C, while the coldest is January averaging around 17°C at night. Precipitation totals about 421 mm a year and is strongly seasonal — March alone averages 71 mm while June barely receives 6 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Kīhei climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 28 | 29 | 30 | 31 | 31 | 32 | 32 | 31 | 30 | 28 |
| Avg temp (°C) | 22 | 22 | 23 | 24 | 24 | 26 | 26 | 27 | 26 | 26 | 25 | 23 |
| Avg low (°C) | 17 | 17 | 18 | 19 | 19 | 20 | 21 | 22 | 21 | 20 | 20 | 18 |
| Precipitation (mm) | 66 | 51 | 71 | 32 | 22 | 6 | 15 | 15 | 11 | 20 | 44 | 68 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 28 | 29 | 30 | 31 |
| Avg temp (°C) | 22 | 22 | 23 | 24 | 24 | 26 |
| Avg low (°C) | 17 | 17 | 18 | 19 | 19 | 20 |
| Precipitation (mm) | 66 | 51 | 71 | 32 | 22 | 6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 32 | 31 | 30 | 28 |
| Avg temp (°C) | 26 | 27 | 26 | 26 | 25 | 23 |
| Avg low (°C) | 21 | 22 | 21 | 20 | 20 | 18 |
| Precipitation (mm) | 15 | 15 | 11 | 20 | 44 | 68 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 41 | 43 | 47 | 43 | 38 | 36 | 37 | 33 | 36 | 43 | 47 | 43 |
| Relative humidity (%) | 77 | 77 | 78 | 78 | 78 | 78 | 79 | 79 | 78 | 79 | 79 | 78 |
| Wind speed (km/h) | 17.2 | 18.5 | 19.8 | 21.3 | 19.9 | 22.3 | 22.6 | 22.1 | 19.8 | 19.4 | 20.3 | 20.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 41 | 43 | 47 | 43 | 38 | 36 |
| Relative humidity (%) | 77 | 77 | 78 | 78 | 78 | 78 |
| Wind speed (km/h) | 17.2 | 18.5 | 19.8 | 21.3 | 19.9 | 22.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 37 | 33 | 36 | 43 | 47 | 43 |
| Relative humidity (%) | 79 | 79 | 78 | 79 | 79 | 78 |
| Wind speed (km/h) | 22.6 | 22.1 | 19.8 | 19.4 | 20.3 | 20.1 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Kahului Airport, a weather station, about 14 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.