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Numata, Japan climate
Cfa Humid subtropical
Numata has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 30°C, while the coldest is January averaging around −5°C at night. Precipitation totals about 1132 mm a year and is strongly seasonal — July alone averages 178 mm while December barely receives 38 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)Numata climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 6 | 10 | 17 | 22 | 25 | 29 | 30 | 26 | 20 | 14 | 8 |
| Avg temp (°C) | 0 | 1 | 4 | 10 | 16 | 20 | 24 | 25 | 20 | 14 | 8 | 3 |
| Avg low (°C) | −5 | −4 | −1 | 4 | 10 | 15 | 20 | 20 | 16 | 10 | 3 | −2 |
| Precipitation (mm) | 42 | 43 | 65 | 65 | 90 | 130 | 178 | 168 | 152 | 113 | 47 | 38 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 6 | 10 | 17 | 22 | 25 |
| Avg temp (°C) | 0 | 1 | 4 | 10 | 16 | 20 |
| Avg low (°C) | −5 | −4 | −1 | 4 | 10 | 15 |
| Precipitation (mm) | 42 | 43 | 65 | 65 | 90 | 130 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 30 | 26 | 20 | 14 | 8 |
| Avg temp (°C) | 24 | 25 | 20 | 14 | 8 | 3 |
| Avg low (°C) | 20 | 20 | 16 | 10 | 3 | −2 |
| Precipitation (mm) | 178 | 168 | 152 | 113 | 47 | 38 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 55 | 60 | 65 | 71 | 82 | 81 | 72 | 75 | 68 | 55 | 49 |
| Relative humidity (%) | 93 | 92 | 86 | 81 | 80 | 84 | 86 | 86 | 88 | 88 | 89 | 91 |
| Wind speed (m/s) | 2.7 | 2.9 | 2.7 | 2.3 | 1.9 | 1.5 | 1.3 | 1.3 | 1.5 | 1.7 | 1.8 | 2.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 55 | 60 | 65 | 71 | 82 |
| Relative humidity (%) | 93 | 92 | 86 | 81 | 80 | 84 |
| Wind speed (m/s) | 2.7 | 2.9 | 2.7 | 2.3 | 1.9 | 1.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 72 | 75 | 68 | 55 | 49 |
| Relative humidity (%) | 86 | 86 | 88 | 88 | 89 | 91 |
| Wind speed (m/s) | 1.3 | 1.3 | 1.5 | 1.7 | 1.8 | 2.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Numata, about 5 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.