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Hitachiomiya, Japan climate
Cfa Humid subtropical
Hitachiomiya 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 24°F at night. Precipitation totals about 54 inches a year and is strongly seasonal — September alone averages 7.4 inches while January barely receives 1.59 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)Hitachiomiya climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 49 | 55 | 65 | 73 | 77 | 84 | 87 | 80 | 70 | 61 | 52 |
| Avg temp (°F) | 35 | 37 | 43 | 52 | 61 | 67 | 74 | 76 | 70 | 60 | 49 | 39 |
| Avg low (°F) | 24 | 26 | 32 | 41 | 51 | 60 | 67 | 69 | 63 | 51 | 39 | 29 |
| Precipitation (in) | 1.6 | 1.7 | 3.5 | 4.4 | 5.4 | 5.8 | 7.3 | 5.9 | 7.4 | 6.3 | 2.9 | 1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 49 | 55 | 65 | 73 | 77 |
| Avg temp (°F) | 35 | 37 | 43 | 52 | 61 | 67 |
| Avg low (°F) | 24 | 26 | 32 | 41 | 51 | 60 |
| Precipitation (in) | 1.6 | 1.7 | 3.5 | 4.4 | 5.4 | 5.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 87 | 80 | 70 | 61 | 52 |
| Avg temp (°F) | 74 | 76 | 70 | 60 | 49 | 39 |
| Avg low (°F) | 67 | 69 | 63 | 51 | 39 | 29 |
| Precipitation (in) | 7.3 | 5.9 | 7.4 | 6.3 | 2.9 | 1.7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 62 | 65 | 66 | 70 | 80 | 78 | 68 | 74 | 69 | 62 | 57 |
| Relative humidity (%) | 78 | 76 | 76 | 78 | 81 | 85 | 86 | 85 | 85 | 83 | 81 | 80 |
| Wind speed (mph) | 5.5 | 5.6 | 5.5 | 4.9 | 4.1 | 3.4 | 3.2 | 3.3 | 4.1 | 4.5 | 4.7 | 5.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 58 | 62 | 65 | 66 | 70 | 80 |
| Relative humidity (%) | 78 | 76 | 76 | 78 | 81 | 85 |
| Wind speed (mph) | 5.5 | 5.6 | 5.5 | 4.9 | 4.1 | 3.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 78 | 68 | 74 | 69 | 62 | 57 |
| Relative humidity (%) | 86 | 85 | 85 | 83 | 81 | 80 |
| Wind speed (mph) | 3.2 | 3.3 | 4.1 | 4.5 | 4.7 | 5.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Hitachiomiya, about 8 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.