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Amakusa, Japan climate
Cfa Humid subtropical
Amakusa has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 91°F, while the coldest is January averaging around 36°F at night. Precipitation totals about 83 inches a year and is strongly seasonal — June alone averages 16.0 inches while January barely receives 3.27 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)Amakusa climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 51 | 54 | 60 | 69 | 77 | 81 | 88 | 91 | 84 | 75 | 65 | 55 |
| Avg temp (°F) | 43 | 45 | 51 | 59 | 67 | 73 | 80 | 81 | 75 | 66 | 56 | 47 |
| Avg low (°F) | 36 | 37 | 42 | 49 | 57 | 66 | 73 | 74 | 68 | 58 | 48 | 39 |
| Precipitation (in) | 3.3 | 3.8 | 5.2 | 6.2 | 6.7 | 16.0 | 13.4 | 8.5 | 7.7 | 4.4 | 4.3 | 3.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 51 | 54 | 60 | 69 | 77 | 81 |
| Avg temp (°F) | 43 | 45 | 51 | 59 | 67 | 73 |
| Avg low (°F) | 36 | 37 | 42 | 49 | 57 | 66 |
| Precipitation (in) | 3.3 | 3.8 | 5.2 | 6.2 | 6.7 | 16.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 91 | 84 | 75 | 65 | 55 |
| Avg temp (°F) | 80 | 81 | 75 | 66 | 56 | 47 |
| Avg low (°F) | 73 | 74 | 68 | 58 | 48 | 39 |
| Precipitation (in) | 13.4 | 8.5 | 7.7 | 4.4 | 4.3 | 3.6 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 67 | 66 | 64 | 68 | 81 | 70 | 62 | 63 | 55 | 60 | 66 |
| Relative humidity (%) | 76 | 74 | 74 | 76 | 80 | 86 | 87 | 83 | 81 | 77 | 75 | 75 |
| Wind speed (mph) | 8.4 | 8.1 | 7.6 | 6.3 | 5.0 | 4.6 | 4.7 | 5.1 | 6.0 | 6.9 | 7.2 | 8.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 67 | 66 | 64 | 68 | 81 |
| Relative humidity (%) | 76 | 74 | 74 | 76 | 80 | 86 |
| Wind speed (mph) | 8.4 | 8.1 | 7.6 | 6.3 | 5.0 | 4.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 62 | 63 | 55 | 60 | 66 |
| Relative humidity (%) | 87 | 83 | 81 | 77 | 75 | 75 |
| Wind speed (mph) | 4.7 | 5.1 | 6.0 | 6.9 | 7.2 | 8.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Hondo, about 2 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.