Usuki, Japan climate
Cfa Humid subtropical
Usuki has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 32°C, while the coldest is January averaging around −1°C at night. Precipitation totals about 1792 mm a year and is strongly seasonal — June alone averages 326 mm while December barely receives 47 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)Usuki climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 11 | 12 | 15 | 21 | 25 | 27 | 31 | 32 | 28 | 23 | 18 | 13 |
| Avg temp (°C) | 5 | 6 | 9 | 14 | 19 | 22 | 26 | 26 | 23 | 17 | 12 | 6 |
| Avg low (°C) | −1 | 0 | 3 | 8 | 13 | 18 | 22 | 22 | 19 | 12 | 6 | 1 |
| Precipitation (mm) | 48 | 63 | 98 | 113 | 132 | 326 | 287 | 205 | 272 | 132 | 70 | 47 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 11 | 12 | 15 | 21 | 25 | 27 |
| Avg temp (°C) | 5 | 6 | 9 | 14 | 19 | 22 |
| Avg low (°C) | −1 | 0 | 3 | 8 | 13 | 18 |
| Precipitation (mm) | 48 | 63 | 98 | 113 | 132 | 326 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 28 | 23 | 18 | 13 |
| Avg temp (°C) | 26 | 26 | 23 | 17 | 12 | 6 |
| Avg low (°C) | 22 | 22 | 19 | 12 | 6 | 1 |
| Precipitation (mm) | 287 | 205 | 272 | 132 | 70 | 47 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 72 | 68 | 66 | 70 | 82 | 74 | 65 | 69 | 62 | 65 | 70 |
| Relative humidity (%) | 78 | 76 | 75 | 76 | 79 | 84 | 85 | 84 | 83 | 79 | 78 | 78 |
| Wind speed (mph) | 5.9 | 5.7 | 5.3 | 4.4 | 3.5 | 2.9 | 2.7 | 3.0 | 3.8 | 4.6 | 5.0 | 5.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 72 | 68 | 66 | 70 | 82 |
| Relative humidity (%) | 78 | 76 | 75 | 76 | 79 | 84 |
| Wind speed (mph) | 5.9 | 5.7 | 5.3 | 4.4 | 3.5 | 2.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 65 | 69 | 62 | 65 | 70 |
| Relative humidity (%) | 85 | 84 | 83 | 79 | 78 | 78 |
| Wind speed (mph) | 2.7 | 3.0 | 3.8 | 4.6 | 5.0 | 5.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Inukai, about 17 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.