Ōnojō, Japan climate
Cfa Humid subtropical
Ōnojō has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 33°C, while the coldest is January averaging around 2°C at night. Precipitation totals about 1852 mm a year and is strongly seasonal — July alone averages 359 mm while December barely receives 69 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)Ōnojō climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 11 | 15 | 20 | 25 | 28 | 31 | 33 | 29 | 24 | 18 | 12 |
| Avg temp (°C) | 6 | 7 | 10 | 15 | 19 | 23 | 27 | 28 | 24 | 18 | 13 | 8 |
| Avg low (°C) | 2 | 2 | 5 | 10 | 15 | 19 | 24 | 24 | 20 | 14 | 8 | 4 |
| Precipitation (mm) | 70 | 74 | 114 | 135 | 146 | 282 | 359 | 237 | 184 | 97 | 86 | 69 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 11 | 15 | 20 | 25 | 28 |
| Avg temp (°C) | 6 | 7 | 10 | 15 | 19 | 23 |
| Avg low (°C) | 2 | 2 | 5 | 10 | 15 | 19 |
| Precipitation (mm) | 70 | 74 | 114 | 135 | 146 | 282 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 33 | 29 | 24 | 18 | 12 |
| Avg temp (°C) | 27 | 28 | 24 | 18 | 13 | 8 |
| Avg low (°C) | 24 | 24 | 20 | 14 | 8 | 4 |
| Precipitation (mm) | 359 | 237 | 184 | 97 | 86 | 69 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 73 | 70 | 67 | 68 | 81 | 73 | 66 | 67 | 60 | 65 | 71 |
| Relative humidity (%) | 80 | 78 | 78 | 78 | 79 | 83 | 85 | 84 | 85 | 82 | 81 | 81 |
| Wind speed (km/h) | 5.3 | 5.4 | 5.3 | 4.8 | 4.1 | 3.9 | 3.9 | 3.7 | 4.0 | 4.2 | 4.2 | 4.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 73 | 70 | 67 | 68 | 81 |
| Relative humidity (%) | 80 | 78 | 78 | 78 | 79 | 83 |
| Wind speed (km/h) | 5.3 | 5.4 | 5.3 | 4.8 | 4.1 | 3.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 66 | 67 | 60 | 65 | 71 |
| Relative humidity (%) | 85 | 84 | 85 | 82 | 81 | 81 |
| Wind speed (km/h) | 3.9 | 3.7 | 4.0 | 4.2 | 4.2 | 4.9 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Dazaifu, about 4 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.