Kasai, Japan climate
Cfa Humid subtropical
Kasai has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 92°F, while the coldest is January averaging around 31°F at night. Precipitation totals about 57 inches a year and is strongly seasonal — July alone averages 8.2 inches while January barely receives 1.66 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)Kasai climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 50 | 57 | 67 | 76 | 82 | 89 | 92 | 84 | 74 | 63 | 52 |
| Avg temp (°F) | 38 | 40 | 46 | 56 | 65 | 72 | 79 | 81 | 74 | 64 | 52 | 42 |
| Avg low (°F) | 31 | 31 | 37 | 46 | 55 | 64 | 73 | 74 | 67 | 55 | 44 | 35 |
| Precipitation (in) | 1.7 | 2.2 | 4.2 | 5.0 | 6.1 | 7.2 | 8.2 | 5.2 | 7.4 | 4.6 | 2.8 | 2.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 50 | 57 | 67 | 76 | 82 |
| Avg temp (°F) | 38 | 40 | 46 | 56 | 65 | 72 |
| Avg low (°F) | 31 | 31 | 37 | 46 | 55 | 64 |
| Precipitation (in) | 1.7 | 2.2 | 4.2 | 5.0 | 6.1 | 7.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 89 | 92 | 84 | 74 | 63 | 52 |
| Avg temp (°F) | 79 | 81 | 74 | 64 | 52 | 42 |
| Avg low (°F) | 73 | 74 | 67 | 55 | 44 | 35 |
| Precipitation (in) | 8.2 | 5.2 | 7.4 | 4.6 | 2.8 | 2.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 73 | 68 | 65 | 67 | 78 | 72 | 62 | 69 | 66 | 70 | 73 |
| Relative humidity (%) | 87 | 84 | 81 | 80 | 81 | 84 | 86 | 84 | 85 | 84 | 85 | 87 |
| Wind speed (mph) | 4.5 | 5.0 | 5.3 | 4.8 | 4.2 | 3.7 | 3.8 | 3.7 | 4.1 | 4.1 | 3.8 | 4.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 73 | 68 | 65 | 67 | 78 |
| Relative humidity (%) | 87 | 84 | 81 | 80 | 81 | 84 |
| Wind speed (mph) | 4.5 | 5.0 | 5.3 | 4.8 | 4.2 | 3.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 62 | 69 | 66 | 70 | 73 |
| Relative humidity (%) | 86 | 84 | 85 | 84 | 85 | 87 |
| Wind speed (mph) | 3.8 | 3.7 | 4.1 | 4.1 | 3.8 | 4.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Fukusaki, about 9 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.