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Nanto-shi, Japan climate
Cfa Humid subtropical
Nanto-shi has a seasonal mild-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 −1°C at night. Around 2228 mm of precipitation falls each year, peaking in December (269 mm) and easing off in May (110 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)Nanto-shi climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 6 | 11 | 17 | 22 | 25 | 29 | 30 | 26 | 21 | 15 | 9 |
| Avg temp (°C) | 2 | 2 | 6 | 12 | 17 | 21 | 25 | 26 | 22 | 16 | 11 | 5 |
| Avg low (°C) | −1 | −1 | 2 | 6 | 12 | 17 | 21 | 22 | 18 | 12 | 7 | 2 |
| Precipitation (mm) | 240 | 152 | 143 | 116 | 110 | 168 | 228 | 201 | 214 | 168 | 220 | 269 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 6 | 11 | 17 | 22 | 25 |
| Avg temp (°C) | 2 | 2 | 6 | 12 | 17 | 21 |
| Avg low (°C) | −1 | −1 | 2 | 6 | 12 | 17 |
| Precipitation (mm) | 240 | 152 | 143 | 116 | 110 | 168 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 30 | 26 | 21 | 15 | 9 |
| Avg temp (°C) | 25 | 26 | 22 | 16 | 11 | 5 |
| Avg low (°C) | 21 | 22 | 18 | 12 | 7 | 2 |
| Precipitation (mm) | 228 | 201 | 214 | 168 | 220 | 269 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 90 | 86 | 78 | 72 | 73 | 81 | 79 | 69 | 76 | 72 | 77 | 86 |
| Relative humidity (%) | 89 | 87 | 82 | 76 | 75 | 79 | 82 | 81 | 82 | 83 | 84 | 88 |
| Wind speed (mph) | 7.7 | 7.6 | 7.6 | 7.2 | 6.3 | 5.3 | 5.6 | 5.1 | 5.5 | 5.8 | 6.6 | 7.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 90 | 86 | 78 | 72 | 73 | 81 |
| Relative humidity (%) | 89 | 87 | 82 | 76 | 75 | 79 |
| Wind speed (mph) | 7.7 | 7.6 | 7.6 | 7.2 | 6.3 | 5.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 69 | 76 | 72 | 77 | 86 |
| Relative humidity (%) | 82 | 81 | 82 | 83 | 84 | 88 |
| Wind speed (mph) | 5.6 | 5.1 | 5.5 | 5.8 | 6.6 | 7.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Tonami, about 6 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.