Amami, Japan climate
Cfa Humid subtropical
Amami has a seasonal warm-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 12°C at night. Precipitation totals about 2137 mm a year and is strongly seasonal — June alone averages 377 mm while January barely receives 94 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)Amami climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 18 | 19 | 20 | 23 | 26 | 28 | 32 | 32 | 31 | 28 | 24 | 20 |
| Avg temp (°C) | 15 | 16 | 17 | 20 | 23 | 26 | 29 | 29 | 28 | 25 | 21 | 17 |
| Avg low (°C) | 12 | 13 | 14 | 17 | 20 | 23 | 26 | 26 | 25 | 22 | 18 | 14 |
| Precipitation (mm) | 94 | 105 | 133 | 152 | 231 | 377 | 157 | 195 | 240 | 200 | 147 | 107 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 18 | 19 | 20 | 23 | 26 | 28 |
| Avg temp (°C) | 15 | 16 | 17 | 20 | 23 | 26 |
| Avg low (°C) | 12 | 13 | 14 | 17 | 20 | 23 |
| Precipitation (mm) | 94 | 105 | 133 | 152 | 231 | 377 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 32 | 31 | 28 | 24 | 20 |
| Avg temp (°C) | 29 | 29 | 28 | 25 | 21 | 17 |
| Avg low (°C) | 26 | 26 | 25 | 22 | 18 | 14 |
| Precipitation (mm) | 157 | 195 | 240 | 200 | 147 | 107 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 86 | 85 | 84 | 81 | 79 | 82 | 60 | 56 | 63 | 68 | 76 | 82 |
| Relative humidity (%) | 74 | 75 | 76 | 77 | 81 | 88 | 84 | 82 | 79 | 76 | 74 | 73 |
| Wind speed (m/s) | 6.7 | 6.5 | 6.2 | 5.6 | 5.0 | 5.2 | 5.0 | 5.2 | 5.3 | 6.0 | 6.1 | 6.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 86 | 85 | 84 | 81 | 79 | 82 |
| Relative humidity (%) | 74 | 75 | 76 | 77 | 81 | 88 |
| Wind speed (m/s) | 6.7 | 6.5 | 6.2 | 5.6 | 5.0 | 5.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 56 | 63 | 68 | 76 | 82 |
| Relative humidity (%) | 84 | 82 | 79 | 76 | 74 | 73 |
| Wind speed (m/s) | 5.0 | 5.2 | 5.3 | 6.0 | 6.1 | 6.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Kasari, about 22 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.