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Tatebayashi, Japan climate
Cfa Humid subtropical
Tatebayashi has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 33°C, while the coldest is January averaging around −1°C at night. Precipitation totals about 1203 mm a year and is strongly seasonal — September alone averages 168 mm while December barely receives 33 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)Tatebayashi climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 11 | 14 | 20 | 25 | 27 | 31 | 33 | 28 | 22 | 17 | 12 |
| Avg temp (°C) | 4 | 5 | 9 | 14 | 19 | 22 | 26 | 27 | 23 | 18 | 12 | 6 |
| Avg low (°C) | −1 | 0 | 3 | 9 | 14 | 19 | 22 | 24 | 20 | 14 | 7 | 2 |
| Precipitation (mm) | 37 | 34 | 70 | 85 | 114 | 142 | 159 | 144 | 168 | 161 | 56 | 33 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 11 | 14 | 20 | 25 | 27 |
| Avg temp (°C) | 4 | 5 | 9 | 14 | 19 | 22 |
| Avg low (°C) | −1 | 0 | 3 | 9 | 14 | 19 |
| Precipitation (mm) | 37 | 34 | 70 | 85 | 114 | 142 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 33 | 28 | 22 | 17 | 12 |
| Avg temp (°C) | 26 | 27 | 23 | 18 | 12 | 6 |
| Avg low (°C) | 22 | 24 | 20 | 14 | 7 | 2 |
| Precipitation (mm) | 159 | 144 | 168 | 161 | 56 | 33 |
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 (%) | 76 | 75 | 74 | 74 | 76 | 80 | 81 | 81 | 83 | 82 | 80 | 78 |
| Wind speed (mph) | 4.6 | 5.1 | 5.2 | 5.3 | 4.8 | 4.3 | 4.1 | 4.0 | 4.2 | 3.9 | 3.7 | 4.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 55 | 60 | 65 | 71 | 82 |
| Relative humidity (%) | 76 | 75 | 74 | 74 | 76 | 80 |
| Wind speed (mph) | 4.6 | 5.1 | 5.2 | 5.3 | 4.8 | 4.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 72 | 75 | 68 | 55 | 49 |
| Relative humidity (%) | 81 | 81 | 83 | 82 | 80 | 78 |
| Wind speed (mph) | 4.1 | 4.0 | 4.2 | 3.9 | 3.7 | 4.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Tatebayashi, 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.