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Furukawa, Japan climate
Cfa Humid subtropical
Furukawa 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 −4°C at night. Precipitation totals about 1174 mm a year and is strongly seasonal — July alone averages 170 mm while February barely receives 35 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)Furukawa climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 4 | 5 | 9 | 15 | 21 | 24 | 27 | 28 | 25 | 19 | 13 | 7 |
| Avg temp (°C) | 0 | 1 | 4 | 9 | 15 | 19 | 23 | 24 | 20 | 14 | 8 | 2 |
| Avg low (°C) | −4 | −4 | −1 | 4 | 10 | 15 | 19 | 20 | 16 | 9 | 3 | −2 |
| Precipitation (mm) | 45 | 35 | 70 | 83 | 103 | 123 | 170 | 139 | 160 | 129 | 63 | 53 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 4 | 5 | 9 | 15 | 21 | 24 |
| Avg temp (°C) | 0 | 1 | 4 | 9 | 15 | 19 |
| Avg low (°C) | −4 | −4 | −1 | 4 | 10 | 15 |
| Precipitation (mm) | 45 | 35 | 70 | 83 | 103 | 123 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 28 | 25 | 19 | 13 | 7 |
| Avg temp (°C) | 23 | 24 | 20 | 14 | 8 | 2 |
| Avg low (°C) | 19 | 20 | 16 | 9 | 3 | −2 |
| Precipitation (mm) | 170 | 139 | 160 | 129 | 63 | 53 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 75 | 73 | 71 | 71 | 77 | 80 | 71 | 76 | 72 | 74 | 79 |
| Relative humidity (%) | 95 | 93 | 87 | 82 | 81 | 83 | 86 | 85 | 87 | 87 | 89 | 93 |
| Wind speed (km/h) | 6.8 | 8.0 | 7.2 | 5.1 | 3.4 | 2.6 | 2.3 | 2.3 | 2.5 | 2.8 | 3.3 | 4.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 75 | 73 | 71 | 71 | 77 |
| Relative humidity (%) | 95 | 93 | 87 | 82 | 81 | 83 |
| Wind speed (km/h) | 6.8 | 8.0 | 7.2 | 5.1 | 3.4 | 2.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 71 | 76 | 72 | 74 | 79 |
| Relative humidity (%) | 86 | 85 | 87 | 87 | 89 | 93 |
| Wind speed (km/h) | 2.3 | 2.3 | 2.5 | 2.8 | 3.3 | 4.8 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Furukawa, about 5 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.