Yasu, Japan climate
Cfa Humid subtropical
Yasu 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. Around 1577 mm of precipitation falls each year, peaking in June (218 mm) and easing off in January (57 mm).
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Summers
Hot
Highs near 33°C in August.
❄️
Winters
Chilly
Lows near 1°C in January.
🌧️
Rain
Very wet
About 1577 mm of rain a year.
Wettest in June
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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)Yasu climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 8 | 9 | 13 | 19 | 24 | 27 | 31 | 33 | 28 | 22 | 16 | 11 |
| Avg temp (°C) | 4 | 4 | 8 | 13 | 18 | 22 | 26 | 27 | 23 | 17 | 12 | 7 |
| Avg low (°C) | 1 | 1 | 3 | 8 | 13 | 18 | 23 | 24 | 20 | 13 | 7 | 3 |
| Precipitation (mm) | 57 | 70 | 118 | 126 | 157 | 218 | 212 | 160 | 172 | 149 | 79 | 60 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 8 | 9 | 13 | 19 | 24 | 27 |
| Avg temp (°C) | 4 | 4 | 8 | 13 | 18 | 22 |
| Avg low (°C) | 1 | 1 | 3 | 8 | 13 | 18 |
| Precipitation (mm) | 57 | 70 | 118 | 126 | 157 | 218 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 33 | 28 | 22 | 16 | 11 |
| Avg temp (°C) | 26 | 27 | 23 | 17 | 12 | 7 |
| Avg low (°C) | 23 | 24 | 20 | 13 | 7 | 3 |
| Precipitation (mm) | 212 | 160 | 172 | 149 | 79 | 60 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 69 | 67 | 65 | 69 | 80 | 74 | 63 | 70 | 66 | 66 | 69 |
| Relative humidity (%) | 85 | 83 | 81 | 79 | 81 | 84 | 86 | 84 | 85 | 84 | 84 | 85 |
| Wind speed (m/s) | 2.8 | 2.9 | 3.0 | 2.7 | 2.3 | 2.1 | 2.0 | 2.0 | 2.2 | 2.3 | 2.3 | 2.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 69 | 67 | 65 | 69 | 80 |
| Relative humidity (%) | 85 | 83 | 81 | 79 | 81 | 84 |
| Wind speed (m/s) | 2.8 | 2.9 | 3.0 | 2.7 | 2.3 | 2.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 63 | 70 | 66 | 66 | 69 |
| Relative humidity (%) | 86 | 84 | 85 | 84 | 84 | 85 |
| Wind speed (m/s) | 2.0 | 2.0 | 2.2 | 2.3 | 2.3 | 2.6 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Otsu, 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.