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Komatsu, Japan climate
Cfa Humid subtropical
Komatsu 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 2210 mm of precipitation falls each year, peaking in December (282 mm) and easing off in May (127 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)Komatsu climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 8 | 12 | 17 | 22 | 25 | 30 | 31 | 27 | 22 | 16 | 10 |
| Avg temp (°C) | 4 | 4 | 7 | 12 | 17 | 21 | 25 | 27 | 23 | 17 | 11 | 6 |
| Avg low (°C) | 0 | 0 | 2 | 7 | 12 | 18 | 22 | 23 | 19 | 12 | 7 | 3 |
| Precipitation (mm) | 251 | 148 | 144 | 129 | 127 | 151 | 219 | 152 | 215 | 172 | 219 | 282 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 8 | 12 | 17 | 22 | 25 |
| Avg temp (°C) | 4 | 4 | 7 | 12 | 17 | 21 |
| Avg low (°C) | 0 | 0 | 2 | 7 | 12 | 18 |
| Precipitation (mm) | 251 | 148 | 144 | 129 | 127 | 151 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 31 | 27 | 22 | 16 | 10 |
| Avg temp (°C) | 25 | 27 | 23 | 17 | 11 | 6 |
| Avg low (°C) | 22 | 23 | 19 | 12 | 7 | 3 |
| Precipitation (mm) | 219 | 152 | 215 | 172 | 219 | 282 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 90 | 86 | 78 | 72 | 73 | 81 | 79 | 69 | 76 | 72 | 77 | 86 |
| Relative humidity (%) | 78 | 76 | 75 | 77 | 80 | 84 | 86 | 82 | 78 | 75 | 75 | 77 |
| Wind speed (mph) | 13.5 | 12.6 | 11.6 | 10.1 | 8.6 | 7.4 | 7.7 | 8.3 | 10.0 | 11.1 | 12.1 | 13.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 90 | 86 | 78 | 72 | 73 | 81 |
| Relative humidity (%) | 78 | 76 | 75 | 77 | 80 | 84 |
| Wind speed (mph) | 13.5 | 12.6 | 11.6 | 10.1 | 8.6 | 7.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 69 | 76 | 72 | 77 | 86 |
| Relative humidity (%) | 86 | 82 | 78 | 75 | 75 | 77 |
| Wind speed (mph) | 7.7 | 8.3 | 10.0 | 11.1 | 12.1 | 13.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Komatsu, about 3 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.