Shisō, Japan climate
Cfa Humid subtropical
Shisō has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 32°C, while the coldest is January averaging around −1°C at night. Around 1811 mm of precipitation falls each year, peaking in July (283 mm) and easing off in January (73 mm).
☀️
Summers
Hot
Highs near 32°C in August.
❄️
Winters
Cold
Lows near −1°C in January.
🌧️
Rain
Very wet
About 1811 mm of rain a year.
Wettest in July
⛅
Sky & trend
Often grey
Overcast skies dominate 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)Shisō climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 9 | 13 | 19 | 24 | 27 | 30 | 32 | 28 | 22 | 16 | 10 |
| Avg temp (°C) | 2 | 3 | 7 | 12 | 17 | 21 | 25 | 26 | 22 | 16 | 10 | 5 |
| Avg low (°C) | −1 | −1 | 2 | 6 | 11 | 17 | 21 | 22 | 18 | 12 | 6 | 1 |
| Precipitation (mm) | 73 | 80 | 133 | 137 | 181 | 215 | 283 | 190 | 230 | 134 | 77 | 78 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 9 | 13 | 19 | 24 | 27 |
| Avg temp (°C) | 2 | 3 | 7 | 12 | 17 | 21 |
| Avg low (°C) | −1 | −1 | 2 | 6 | 11 | 17 |
| Precipitation (mm) | 73 | 80 | 133 | 137 | 181 | 215 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 32 | 28 | 22 | 16 | 10 |
| Avg temp (°C) | 25 | 26 | 22 | 16 | 10 | 5 |
| Avg low (°C) | 21 | 22 | 18 | 12 | 6 | 1 |
| Precipitation (mm) | 283 | 190 | 230 | 134 | 77 | 78 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 85 | 82 | 75 | 68 | 69 | 80 | 76 | 66 | 74 | 70 | 74 | 81 |
| Relative humidity (%) | 86 | 84 | 81 | 79 | 79 | 83 | 85 | 83 | 84 | 84 | 84 | 86 |
| Wind speed (mph) | 4.7 | 4.9 | 4.7 | 4.0 | 3.4 | 2.8 | 2.8 | 2.9 | 3.3 | 3.5 | 3.6 | 4.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 85 | 82 | 75 | 68 | 69 | 80 |
| Relative humidity (%) | 86 | 84 | 81 | 79 | 79 | 83 |
| Wind speed (mph) | 4.7 | 4.9 | 4.7 | 4.0 | 3.4 | 2.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 66 | 74 | 70 | 74 | 81 |
| Relative humidity (%) | 85 | 83 | 84 | 84 | 84 | 86 |
| Wind speed (mph) | 2.8 | 2.9 | 3.3 | 3.5 | 3.6 | 4.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Ichinomiya, about 13 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.