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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 89°F, while the coldest is January averaging around 62°F at night. Precipitation totals about 17 inches a year and is strongly seasonal — March alone averages 2.8 inches while June barely receives 0.23 inches.
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 (°F) | 82 | 82 | 82 | 84 | 85 | 87 | 88 | 89 | 89 | 88 | 85 | 83 |
| Avg temp (°F) | 72 | 72 | 73 | 75 | 76 | 78 | 79 | 80 | 79 | 78 | 76 | 74 |
| Avg low (°F) | 62 | 63 | 64 | 66 | 66 | 69 | 70 | 71 | 70 | 69 | 67 | 65 |
| Precipitation (in) | 2.6 | 2.0 | 2.8 | 1.3 | 0.9 | 0.2 | 0.6 | 0.6 | 0.4 | 0.8 | 1.7 | 2.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 82 | 82 | 82 | 84 | 85 | 87 |
| Avg temp (°F) | 72 | 72 | 73 | 75 | 76 | 78 |
| Avg low (°F) | 62 | 63 | 64 | 66 | 66 | 69 |
| Precipitation (in) | 2.6 | 2.0 | 2.8 | 1.3 | 0.9 | 0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 89 | 89 | 88 | 85 | 83 |
| Avg temp (°F) | 79 | 80 | 79 | 78 | 76 | 74 |
| Avg low (°F) | 70 | 71 | 70 | 69 | 67 | 65 |
| Precipitation (in) | 0.6 | 0.6 | 0.4 | 0.8 | 1.7 | 2.7 |
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 (mph) | 10.7 | 11.5 | 12.3 | 13.2 | 12.4 | 13.9 | 14.0 | 13.7 | 12.3 | 12.1 | 12.6 | 12.5 |
| 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 (mph) | 10.7 | 11.5 | 12.3 | 13.2 | 12.4 | 13.9 |
| 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 (mph) | 14.0 | 13.7 | 12.3 | 12.1 | 12.6 | 12.5 |
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.