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Aizu-Wakamatsu, Japan climate
Cfa Humid subtropical
Aizu-Wakamatsu has a strongly seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 87°F, while the coldest is January averaging around 26°F at night. Around 49 inches of precipitation falls each year, peaking in July (7.7 inches) and easing off in April (2.5 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)Aizu-Wakamatsu climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 37 | 39 | 48 | 62 | 73 | 79 | 85 | 87 | 79 | 67 | 54 | 42 |
| Avg temp (°F) | 31 | 32 | 39 | 50 | 61 | 69 | 75 | 77 | 69 | 57 | 45 | 36 |
| Avg low (°F) | 26 | 26 | 31 | 40 | 51 | 61 | 68 | 69 | 62 | 50 | 38 | 30 |
| Precipitation (in) | 4.0 | 2.7 | 3.1 | 2.5 | 3.0 | 4.3 | 7.7 | 5.5 | 4.9 | 4.4 | 3.0 | 4.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 37 | 39 | 48 | 62 | 73 | 79 |
| Avg temp (°F) | 31 | 32 | 39 | 50 | 61 | 69 |
| Avg low (°F) | 26 | 26 | 31 | 40 | 51 | 61 |
| Precipitation (in) | 4.0 | 2.7 | 3.1 | 2.5 | 3.0 | 4.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 85 | 87 | 79 | 67 | 54 | 42 |
| Avg temp (°F) | 75 | 77 | 69 | 57 | 45 | 36 |
| Avg low (°F) | 68 | 69 | 62 | 50 | 38 | 30 |
| Precipitation (in) | 7.7 | 5.5 | 4.9 | 4.4 | 3.0 | 4.3 |
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 (%) | 93 | 92 | 86 | 81 | 80 | 83 | 85 | 84 | 86 | 88 | 89 | 91 |
| Wind speed (mph) | 3.8 | 4.7 | 4.1 | 2.9 | 1.9 | 1.4 | 1.3 | 1.2 | 1.3 | 1.5 | 1.8 | 2.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 86 | 81 | 77 | 73 | 70 | 78 |
| Relative humidity (%) | 93 | 92 | 86 | 81 | 80 | 83 |
| Wind speed (mph) | 3.8 | 4.7 | 4.1 | 2.9 | 1.9 | 1.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 69 | 76 | 75 | 78 | 84 |
| Relative humidity (%) | 85 | 84 | 86 | 88 | 89 | 91 |
| Wind speed (mph) | 1.3 | 1.2 | 1.3 | 1.5 | 1.8 | 2.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Wakamatsu, 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.