Ōshū, Japan climate
Cfa Humid subtropical
Ōshū has a strongly seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 84°F, while the coldest is January averaging around 24°F at night. Around 54 inches of precipitation falls each year, peaking in July (7.7 inches) and easing off in February (2.2 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)Ōshū climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 36 | 38 | 47 | 59 | 69 | 76 | 81 | 84 | 77 | 65 | 53 | 41 |
| Avg temp (°F) | 30 | 32 | 38 | 49 | 59 | 67 | 73 | 75 | 68 | 56 | 45 | 35 |
| Avg low (°F) | 24 | 25 | 31 | 40 | 51 | 60 | 67 | 69 | 61 | 48 | 37 | 29 |
| Precipitation (in) | 2.9 | 2.2 | 3.5 | 3.4 | 4.4 | 5.0 | 7.7 | 6.5 | 6.1 | 4.7 | 3.6 | 3.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 36 | 38 | 47 | 59 | 69 | 76 |
| Avg temp (°F) | 30 | 32 | 38 | 49 | 59 | 67 |
| Avg low (°F) | 24 | 25 | 31 | 40 | 51 | 60 |
| Precipitation (in) | 2.9 | 2.2 | 3.5 | 3.4 | 4.4 | 5.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 81 | 84 | 77 | 65 | 53 | 41 |
| Avg temp (°F) | 73 | 75 | 68 | 56 | 45 | 35 |
| Avg low (°F) | 67 | 69 | 61 | 48 | 37 | 29 |
| Precipitation (in) | 7.7 | 6.5 | 6.1 | 4.7 | 3.6 | 3.6 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 67 | 70 | 69 | 71 | 76 | 80 | 73 | 74 | 68 | 67 | 70 |
| Relative humidity (%) | 95 | 95 | 88 | 82 | 81 | 83 | 86 | 86 | 87 | 86 | 89 | 92 |
| Wind speed (mph) | 1.7 | 2.4 | 2.0 | 0.9 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 67 | 70 | 69 | 71 | 76 |
| Relative humidity (%) | 95 | 95 | 88 | 82 | 81 | 83 |
| Wind speed (mph) | 1.7 | 2.4 | 2.0 | 0.9 | 0.2 | 0.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 73 | 74 | 68 | 67 | 70 |
| Relative humidity (%) | 86 | 86 | 87 | 86 | 89 | 92 |
| Wind speed (mph) | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.6 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Kitakami, about 17 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.