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Higashihiroshima, Japan climate
Cfa Humid subtropical
Higashihiroshima 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. Precipitation totals about 1375 mm a year and is strongly seasonal — July alone averages 241 mm while January barely receives 33 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)Higashihiroshima climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 9 | 12 | 18 | 23 | 25 | 29 | 30 | 27 | 21 | 15 | 9 |
| Avg temp (°C) | 3 | 4 | 7 | 13 | 18 | 21 | 25 | 26 | 22 | 17 | 11 | 5 |
| Avg low (°C) | −1 | 0 | 3 | 8 | 13 | 18 | 22 | 23 | 19 | 13 | 7 | 1 |
| Precipitation (mm) | 33 | 54 | 88 | 115 | 133 | 190 | 241 | 141 | 152 | 106 | 64 | 57 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 9 | 12 | 18 | 23 | 25 |
| Avg temp (°C) | 3 | 4 | 7 | 13 | 18 | 21 |
| Avg low (°C) | −1 | 0 | 3 | 8 | 13 | 18 |
| Precipitation (mm) | 33 | 54 | 88 | 115 | 133 | 190 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 30 | 27 | 21 | 15 | 9 |
| Avg temp (°C) | 25 | 26 | 22 | 17 | 11 | 5 |
| Avg low (°C) | 22 | 23 | 19 | 13 | 7 | 1 |
| Precipitation (mm) | 241 | 141 | 152 | 106 | 64 | 57 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 79 | 73 | 68 | 68 | 79 | 75 | 67 | 72 | 68 | 72 | 78 |
| Relative humidity (%) | 80 | 79 | 78 | 77 | 78 | 82 | 85 | 81 | 81 | 80 | 80 | 81 |
| Wind speed (km/h) | 11.2 | 11.0 | 10.6 | 9.3 | 7.9 | 7.0 | 7.2 | 7.3 | 8.4 | 8.8 | 8.9 | 10.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 79 | 73 | 68 | 68 | 79 |
| Relative humidity (%) | 80 | 79 | 78 | 77 | 78 | 82 |
| Wind speed (km/h) | 11.2 | 11.0 | 10.6 | 9.3 | 7.9 | 7.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 67 | 72 | 68 | 72 | 78 |
| Relative humidity (%) | 85 | 81 | 81 | 80 | 80 | 81 |
| Wind speed (km/h) | 7.2 | 7.3 | 8.4 | 8.8 | 8.9 | 10.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Hongo, 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.