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Minami-Sōma, Japan climate
Cfa Humid subtropical
Minami-Sōma has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 83°F, while the coldest is January averaging around 27°F at night. Precipitation totals about 61 inches a year and is strongly seasonal — September alone averages 9.4 inches while December barely receives 1.74 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)Minami-Sōma climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 46 | 52 | 61 | 70 | 74 | 80 | 83 | 77 | 69 | 60 | 50 |
| Avg temp (°F) | 36 | 37 | 42 | 51 | 60 | 66 | 73 | 75 | 69 | 59 | 49 | 40 |
| Avg low (°F) | 27 | 27 | 32 | 41 | 50 | 58 | 66 | 69 | 62 | 50 | 39 | 31 |
| Precipitation (in) | 2.3 | 1.8 | 3.7 | 4.7 | 5.0 | 6.2 | 7.6 | 6.4 | 9.4 | 8.9 | 2.8 | 1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 46 | 52 | 61 | 70 | 74 |
| Avg temp (°F) | 36 | 37 | 42 | 51 | 60 | 66 |
| Avg low (°F) | 27 | 27 | 32 | 41 | 50 | 58 |
| Precipitation (in) | 2.3 | 1.8 | 3.7 | 4.7 | 5.0 | 6.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 80 | 83 | 77 | 69 | 60 | 50 |
| Avg temp (°F) | 73 | 75 | 69 | 59 | 49 | 40 |
| Avg low (°F) | 66 | 69 | 62 | 50 | 39 | 31 |
| Precipitation (in) | 7.6 | 6.4 | 9.4 | 8.9 | 2.8 | 1.7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 62 | 63 | 65 | 66 | 69 | 77 | 78 | 69 | 74 | 68 | 63 | 63 |
| Relative humidity (%) | 77 | 75 | 75 | 78 | 82 | 87 | 89 | 87 | 84 | 79 | 78 | 78 |
| Wind speed (mph) | 11.2 | 10.8 | 9.7 | 8.1 | 6.4 | 5.3 | 4.9 | 5.4 | 6.9 | 8.0 | 9.0 | 10.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 62 | 63 | 65 | 66 | 69 | 77 |
| Relative humidity (%) | 77 | 75 | 75 | 78 | 82 | 87 |
| Wind speed (mph) | 11.2 | 10.8 | 9.7 | 8.1 | 6.4 | 5.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 78 | 69 | 74 | 68 | 63 | 63 |
| Relative humidity (%) | 89 | 87 | 84 | 79 | 78 | 78 |
| Wind speed (mph) | 4.9 | 5.4 | 6.9 | 8.0 | 9.0 | 10.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Namie, about 15 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.