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Tsuruoka, Japan climate
Cfa Humid subtropical
Tsuruoka has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 30°C, while the coldest is January averaging around −1°C at night. Around 2191 mm of precipitation falls each year, peaking in December (279 mm) and easing off in April (107 mm). Snowfall is heavy (210 cm of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 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)Tsuruoka climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 4 | 5 | 9 | 16 | 21 | 25 | 28 | 30 | 26 | 20 | 14 | 8 |
| Avg temp (°C) | 2 | 2 | 5 | 10 | 16 | 20 | 24 | 25 | 21 | 15 | 10 | 4 |
| Avg low (°C) | −1 | −1 | 1 | 5 | 11 | 16 | 20 | 21 | 17 | 11 | 5 | 1 |
| Precipitation (mm) | 218 | 135 | 130 | 107 | 120 | 124 | 220 | 199 | 185 | 208 | 267 | 279 |
| Snowfall (cm) | 85 | 62 | 20 | — | — | — | — | — | — | — | 3 | 40 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 4 | 5 | 9 | 16 | 21 | 25 |
| Avg temp (°C) | 2 | 2 | 5 | 10 | 16 | 20 |
| Avg low (°C) | −1 | −1 | 1 | 5 | 11 | 16 |
| Precipitation (mm) | 218 | 135 | 130 | 107 | 120 | 124 |
| Snowfall (cm) | 85 | 62 | 20 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 30 | 26 | 20 | 14 | 8 |
| Avg temp (°C) | 24 | 25 | 21 | 15 | 10 | 4 |
| Avg low (°C) | 20 | 21 | 17 | 11 | 5 | 1 |
| Precipitation (mm) | 220 | 199 | 185 | 208 | 267 | 279 |
| Snowfall (cm) | — | — | — | — | 3 | 40 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 94 | 90 | 83 | 76 | 74 | 78 | 79 | 70 | 77 | 78 | 84 | 92 |
| Relative humidity (%) | 94 | 92 | 86 | 81 | 80 | 81 | 84 | 83 | 84 | 84 | 87 | 92 |
| Wind speed (km/h) | 8.0 | 9.0 | 7.7 | 5.4 | 3.8 | 3.2 | 3.1 | 3.1 | 3.3 | 3.8 | 4.4 | 6.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 94 | 90 | 83 | 76 | 74 | 78 |
| Relative humidity (%) | 94 | 92 | 86 | 81 | 80 | 81 |
| Wind speed (km/h) | 8.0 | 9.0 | 7.7 | 5.4 | 3.8 | 3.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 70 | 77 | 78 | 84 | 92 |
| Relative humidity (%) | 84 | 83 | 84 | 84 | 87 | 92 |
| Wind speed (km/h) | 3.1 | 3.1 | 3.3 | 3.8 | 4.4 | 6.0 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Tsuruoka, 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.