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Hachinohe, Japan climate
Cfa Humid subtropical
Hachinohe has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 80°F, while the coldest is January averaging around 25°F at night. Around 41 inches of precipitation falls each year, peaking in September (6.2 inches) and easing off in February (1.6 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)Hachinohe climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 37 | 38 | 46 | 57 | 66 | 70 | 77 | 80 | 74 | 65 | 53 | 42 |
| Avg temp (°F) | 31 | 32 | 38 | 47 | 56 | 62 | 69 | 73 | 67 | 56 | 45 | 35 |
| Avg low (°F) | 25 | 25 | 30 | 39 | 49 | 56 | 64 | 67 | 60 | 48 | 37 | 29 |
| Precipitation (in) | 1.7 | 1.6 | 2.2 | 2.5 | 3.5 | 4.1 | 5.4 | 5.6 | 6.2 | 4.3 | 2.2 | 1.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 37 | 38 | 46 | 57 | 66 | 70 |
| Avg temp (°F) | 31 | 32 | 38 | 47 | 56 | 62 |
| Avg low (°F) | 25 | 25 | 30 | 39 | 49 | 56 |
| Precipitation (in) | 1.7 | 1.6 | 2.2 | 2.5 | 3.5 | 4.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 77 | 80 | 74 | 65 | 53 | 42 |
| Avg temp (°F) | 69 | 73 | 67 | 56 | 45 | 35 |
| Avg low (°F) | 64 | 67 | 60 | 48 | 37 | 29 |
| Precipitation (in) | 5.4 | 5.6 | 6.2 | 4.3 | 2.2 | 1.9 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 71 | 68 | 66 | 68 | 74 | 79 | 73 | 70 | 65 | 69 | 73 |
| Relative humidity (%) | 91 | 89 | 84 | 80 | 80 | 83 | 86 | 85 | 84 | 83 | 86 | 89 |
| Wind speed (mph) | 9.2 | 9.4 | 8.9 | 7.4 | 5.7 | 4.5 | 4.3 | 4.4 | 5.1 | 6.0 | 7.2 | 8.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 71 | 68 | 66 | 68 | 74 |
| Relative humidity (%) | 91 | 89 | 84 | 80 | 80 | 83 |
| Wind speed (mph) | 9.2 | 9.4 | 8.9 | 7.4 | 5.7 | 4.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 73 | 70 | 65 | 69 | 73 |
| Relative humidity (%) | 86 | 85 | 84 | 83 | 86 | 89 |
| Wind speed (mph) | 4.3 | 4.4 | 5.1 | 6.0 | 7.2 | 8.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Hachinohe, about 3 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.