Naha, Japan climate
Cfa Humid subtropical
Naha has a mildly seasonal warm-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 32°C, while the coldest is January averaging around 15°C at night. Around 2161 mm of precipitation falls each year, peaking in June (284 mm) and easing off in January (102 mm).
☀️
Summers
Hot
Highs near 32°C in July.
❄️
Winters
Mild
Lows near 15°C in January.
🌧️
Rain
Very wet
About 2161 mm of rain a year.
Wettest in June
⛅
Sky & trend
Often grey
Overcast skies dominate much of the year.
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)Naha climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 20 | 22 | 24 | 27 | 30 | 32 | 32 | 31 | 28 | 25 | 22 |
| Avg temp (°C) | 17 | 18 | 19 | 22 | 24 | 27 | 29 | 29 | 28 | 26 | 23 | 19 |
| Avg low (°C) | 15 | 15 | 17 | 19 | 22 | 25 | 27 | 27 | 26 | 24 | 20 | 17 |
| Precipitation (mm) | 102 | 115 | 143 | 161 | 245 | 284 | 188 | 240 | 275 | 179 | 119 | 110 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 20 | 22 | 24 | 27 | 30 |
| Avg temp (°C) | 17 | 18 | 19 | 22 | 24 | 27 |
| Avg low (°C) | 15 | 15 | 17 | 19 | 22 | 25 |
| Precipitation (mm) | 102 | 115 | 143 | 161 | 245 | 284 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 32 | 31 | 28 | 25 | 22 |
| Avg temp (°C) | 29 | 29 | 28 | 26 | 23 | 19 |
| Avg low (°C) | 27 | 27 | 26 | 24 | 20 | 17 |
| Precipitation (mm) | 188 | 240 | 275 | 179 | 119 | 110 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 84 | 82 | 81 | 81 | 78 | 75 | 57 | 56 | 60 | 65 | 75 | 81 |
| Relative humidity (%) | 75 | 77 | 78 | 81 | 84 | 88 | 83 | 82 | 80 | 78 | 76 | 75 |
| Wind speed (km/h) | 22.8 | 22.0 | 20.6 | 19.0 | 17.0 | 18.3 | 18.3 | 18.6 | 19.5 | 22.2 | 22.8 | 23.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 84 | 82 | 81 | 81 | 78 | 75 |
| Relative humidity (%) | 75 | 77 | 78 | 81 | 84 | 88 |
| Wind speed (km/h) | 22.8 | 22.0 | 20.6 | 19.0 | 17.0 | 18.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 57 | 56 | 60 | 65 | 75 | 81 |
| Relative humidity (%) | 83 | 82 | 80 | 78 | 76 | 75 |
| Wind speed (km/h) | 18.3 | 18.6 | 19.5 | 22.2 | 22.8 | 23.6 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Naha, about 1 km from the city centre.
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.