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Shirone, Japan climate
Cfa Humid subtropical
Shirone has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 88°F, while the coldest is January averaging around 30°F at night. Around 74 inches of precipitation falls each year, peaking in December (9.7 inches) and easing off in May (3.6 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)Shirone climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 40 | 42 | 50 | 62 | 72 | 78 | 85 | 88 | 81 | 70 | 57 | 46 |
| Avg temp (°F) | 35 | 35 | 41 | 51 | 62 | 69 | 76 | 78 | 71 | 60 | 49 | 40 |
| Avg low (°F) | 30 | 29 | 33 | 41 | 54 | 62 | 69 | 71 | 64 | 52 | 41 | 34 |
| Precipitation (in) | 7.4 | 4.8 | 4.3 | 3.8 | 3.6 | 4.9 | 8.9 | 6.3 | 5.8 | 6.0 | 8.5 | 9.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 40 | 42 | 50 | 62 | 72 | 78 |
| Avg temp (°F) | 35 | 35 | 41 | 51 | 62 | 69 |
| Avg low (°F) | 30 | 29 | 33 | 41 | 54 | 62 |
| Precipitation (in) | 7.4 | 4.8 | 4.3 | 3.8 | 3.6 | 4.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 85 | 88 | 81 | 70 | 57 | 46 |
| Avg temp (°F) | 76 | 78 | 71 | 60 | 49 | 40 |
| Avg low (°F) | 69 | 71 | 64 | 52 | 41 | 34 |
| Precipitation (in) | 8.9 | 6.3 | 5.8 | 6.0 | 8.5 | 9.7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 86 | 81 | 77 | 73 | 70 | 78 | 79 | 69 | 76 | 75 | 78 | 84 |
| Relative humidity (%) | 87 | 85 | 81 | 78 | 78 | 81 | 84 | 81 | 81 | 80 | 83 | 86 |
| Wind speed (mph) | 6.6 | 7.2 | 5.8 | 3.9 | 2.8 | 2.4 | 2.3 | 2.5 | 3.0 | 3.4 | 3.9 | 5.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 86 | 81 | 77 | 73 | 70 | 78 |
| Relative humidity (%) | 87 | 85 | 81 | 78 | 78 | 81 |
| Wind speed (mph) | 6.6 | 7.2 | 5.8 | 3.9 | 2.8 | 2.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 69 | 76 | 75 | 78 | 84 |
| Relative humidity (%) | 84 | 81 | 81 | 80 | 83 | 86 |
| Wind speed (mph) | 2.3 | 2.5 | 3.0 | 3.4 | 3.9 | 5.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Niitsu, 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.