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Kuroishi, Japan climate
Cfa Humid subtropical
Kuroishi has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 28°C, while the coldest is January averaging around −5°C at night. Around 1060 mm of precipitation falls each year, peaking in August (128 mm) and easing off in March (49 mm).
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)Kuroishi climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 1 | 2 | 6 | 14 | 19 | 23 | 26 | 28 | 24 | 18 | 11 | 4 |
| Avg temp (°C) | −2 | −1 | 2 | 8 | 14 | 18 | 22 | 23 | 19 | 13 | 7 | 1 |
| Avg low (°C) | −5 | −5 | −2 | 3 | 9 | 14 | 18 | 19 | 15 | 8 | 2 | −3 |
| Precipitation (mm) | 82 | 61 | 49 | 58 | 63 | 66 | 118 | 128 | 126 | 107 | 109 | 93 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 1 | 2 | 6 | 14 | 19 | 23 |
| Avg temp (°C) | −2 | −1 | 2 | 8 | 14 | 18 |
| Avg low (°C) | −5 | −5 | −2 | 3 | 9 | 14 |
| Precipitation (mm) | 82 | 61 | 49 | 58 | 63 | 66 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 28 | 24 | 18 | 11 | 4 |
| Avg temp (°C) | 22 | 23 | 19 | 13 | 7 | 1 |
| Avg low (°C) | 18 | 19 | 15 | 8 | 2 | −3 |
| Precipitation (mm) | 118 | 128 | 126 | 107 | 109 | 93 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 88 | 84 | 78 | 72 | 70 | 74 | 77 | 71 | 71 | 70 | 79 | 86 |
| Relative humidity (%) | 93 | 91 | 85 | 81 | 80 | 82 | 84 | 84 | 84 | 84 | 86 | 90 |
| Wind speed (km/h) | 7.5 | 9.2 | 7.4 | 4.4 | 2.4 | 1.9 | 1.8 | 1.8 | 2.0 | 2.3 | 2.9 | 4.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 88 | 84 | 78 | 72 | 70 | 74 |
| Relative humidity (%) | 93 | 91 | 85 | 81 | 80 | 82 |
| Wind speed (km/h) | 7.5 | 9.2 | 7.4 | 4.4 | 2.4 | 1.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 71 | 71 | 70 | 79 | 86 |
| Relative humidity (%) | 84 | 84 | 84 | 84 | 86 | 90 |
| Wind speed (km/h) | 1.8 | 1.8 | 2.0 | 2.3 | 2.9 | 4.9 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Kuroishi, about 2 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.