Ōsaki, Japan climate
Cfa Humid subtropical
Ōsaki has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 85°F, while the coldest is January averaging around 24°F at night. Precipitation totals about 41 inches a year and is strongly seasonal — September alone averages 5.8 inches while February barely receives 1.01 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)Ōsaki climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 40 | 42 | 51 | 60 | 71 | 75 | 81 | 85 | 78 | 68 | 56 | 44 |
| Avg temp (°F) | 33 | 34 | 41 | 50 | 60 | 67 | 73 | 76 | 69 | 58 | 46 | 36 |
| Avg low (°F) | 24 | 25 | 31 | 39 | 52 | 60 | 67 | 70 | 62 | 49 | 37 | 29 |
| Precipitation (in) | 1.3 | 1.0 | 3.0 | 4.0 | 3.5 | 3.7 | 5.1 | 4.5 | 5.8 | 5.6 | 1.9 | 1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 40 | 42 | 51 | 60 | 71 | 75 |
| Avg temp (°F) | 33 | 34 | 41 | 50 | 60 | 67 |
| Avg low (°F) | 24 | 25 | 31 | 39 | 52 | 60 |
| Precipitation (in) | 1.3 | 1.0 | 3.0 | 4.0 | 3.5 | 3.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 81 | 85 | 78 | 68 | 56 | 44 |
| Avg temp (°F) | 73 | 76 | 69 | 58 | 46 | 36 |
| Avg low (°F) | 67 | 70 | 62 | 49 | 37 | 29 |
| Precipitation (in) | 5.1 | 4.5 | 5.8 | 5.6 | 1.9 | 1.7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 65 | 67 | 66 | 69 | 77 | 79 | 71 | 72 | 66 | 62 | 64 |
| Relative humidity (%) | 84 | 81 | 78 | 78 | 80 | 83 | 85 | 84 | 83 | 81 | 82 | 85 |
| Wind speed (mph) | 10.2 | 10.2 | 9.7 | 8.5 | 7.3 | 6.3 | 5.8 | 6.1 | 7.0 | 7.6 | 8.1 | 9.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 65 | 67 | 66 | 69 | 77 |
| Relative humidity (%) | 84 | 81 | 78 | 78 | 80 | 83 |
| Wind speed (mph) | 10.2 | 10.2 | 9.7 | 8.5 | 7.3 | 6.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 71 | 72 | 66 | 62 | 64 |
| Relative humidity (%) | 85 | 84 | 83 | 81 | 82 | 85 |
| Wind speed (mph) | 5.8 | 6.1 | 7.0 | 7.6 | 8.1 | 9.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Mono, about 24 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.