Sōsa, Japan climate
Cfa Humid subtropical
Sōsa has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 31°C, while the coldest is January averaging around 0°C at night. Around 1510 mm of precipitation falls each year, peaking in October (239 mm) and easing off in December (64 mm).
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Summers
Hot
Highs near 31°C in August.
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Winters
Cold
Lows near 0°C in January.
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Rain
Wet
About 1510 mm of rain a year.
Wettest in October
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Sky & trend
Often cloudy
Cloudy skies much of the year.
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)Sōsa climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 11 | 14 | 19 | 23 | 25 | 29 | 31 | 28 | 23 | 18 | 13 |
| Avg temp (°C) | 5 | 6 | 9 | 14 | 18 | 21 | 25 | 26 | 23 | 18 | 12 | 7 |
| Avg low (°C) | 0 | 1 | 4 | 9 | 14 | 18 | 21 | 23 | 20 | 14 | 8 | 2 |
| Precipitation (mm) | 78 | 70 | 127 | 120 | 131 | 160 | 126 | 90 | 201 | 239 | 104 | 64 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 11 | 14 | 19 | 23 | 25 |
| Avg temp (°C) | 5 | 6 | 9 | 14 | 18 | 21 |
| Avg low (°C) | 0 | 1 | 4 | 9 | 14 | 18 |
| Precipitation (mm) | 78 | 70 | 127 | 120 | 131 | 160 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 31 | 28 | 23 | 18 | 13 |
| Avg temp (°C) | 25 | 26 | 23 | 18 | 12 | 7 |
| Avg low (°C) | 21 | 23 | 20 | 14 | 8 | 2 |
| Precipitation (mm) | 126 | 90 | 201 | 239 | 104 | 64 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 65 | 70 | 69 | 72 | 81 | 74 | 60 | 71 | 72 | 68 | 62 |
| Relative humidity (%) | 72 | 72 | 73 | 76 | 80 | 86 | 89 | 86 | 82 | 77 | 74 | 73 |
| Wind speed (m/s) | 6.0 | 5.9 | 5.9 | 5.5 | 4.9 | 4.2 | 4.1 | 4.0 | 4.7 | 5.2 | 5.2 | 5.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 65 | 70 | 69 | 72 | 81 |
| Relative humidity (%) | 72 | 72 | 73 | 76 | 80 | 86 |
| Wind speed (m/s) | 6.0 | 5.9 | 5.9 | 5.5 | 4.9 | 4.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 60 | 71 | 72 | 68 | 62 |
| Relative humidity (%) | 89 | 86 | 82 | 77 | 74 | 73 |
| Wind speed (m/s) | 4.1 | 4.0 | 4.7 | 5.2 | 5.2 | 5.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Yokoshiba-hikari, about 8 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.