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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 87°F, while the coldest is January averaging around 30°F at night. Precipitation totals about 54 inches a year and is strongly seasonal — July alone averages 9.5 inches while January barely receives 1.31 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)Higashihiroshima climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 47 | 54 | 64 | 73 | 77 | 83 | 87 | 80 | 70 | 60 | 49 |
| Avg temp (°F) | 37 | 39 | 45 | 55 | 64 | 70 | 76 | 79 | 72 | 62 | 52 | 41 |
| Avg low (°F) | 30 | 32 | 37 | 46 | 56 | 64 | 71 | 73 | 66 | 56 | 45 | 35 |
| Precipitation (in) | 1.3 | 2.1 | 3.5 | 4.5 | 5.3 | 7.5 | 9.5 | 5.5 | 6.0 | 4.2 | 2.5 | 2.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 47 | 54 | 64 | 73 | 77 |
| Avg temp (°F) | 37 | 39 | 45 | 55 | 64 | 70 |
| Avg low (°F) | 30 | 32 | 37 | 46 | 56 | 64 |
| Precipitation (in) | 1.3 | 2.1 | 3.5 | 4.5 | 5.3 | 7.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 83 | 87 | 80 | 70 | 60 | 49 |
| Avg temp (°F) | 76 | 79 | 72 | 62 | 52 | 41 |
| Avg low (°F) | 71 | 73 | 66 | 56 | 45 | 35 |
| Precipitation (in) | 9.5 | 5.5 | 6.0 | 4.2 | 2.5 | 2.3 |
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 (mph) | 6.9 | 6.8 | 6.6 | 5.7 | 4.9 | 4.4 | 4.5 | 4.5 | 5.2 | 5.5 | 5.5 | 6.4 |
| 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 (mph) | 6.9 | 6.8 | 6.6 | 5.7 | 4.9 | 4.4 |
| 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 (mph) | 4.5 | 4.5 | 5.2 | 5.5 | 5.5 | 6.4 |
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.