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Minamibōsō, Japan climate
Cfa Humid subtropical
Minamibōsō 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 34°F at night. Around 73 inches of precipitation falls each year, peaking in October (10.1 inches) and easing off in February (3.2 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)Minamibōsō climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 52 | 53 | 58 | 66 | 73 | 77 | 84 | 87 | 82 | 73 | 65 | 57 |
| Avg temp (°F) | 44 | 45 | 50 | 58 | 65 | 71 | 77 | 80 | 75 | 65 | 57 | 48 |
| Avg low (°F) | 34 | 35 | 41 | 49 | 58 | 65 | 72 | 75 | 69 | 58 | 48 | 39 |
| Precipitation (in) | 3.4 | 3.2 | 6.3 | 6.1 | 6.0 | 8.3 | 7.1 | 4.1 | 8.7 | 10.1 | 5.7 | 3.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 52 | 53 | 58 | 66 | 73 | 77 |
| Avg temp (°F) | 44 | 45 | 50 | 58 | 65 | 71 |
| Avg low (°F) | 34 | 35 | 41 | 49 | 58 | 65 |
| Precipitation (in) | 3.4 | 3.2 | 6.3 | 6.1 | 6.0 | 8.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 87 | 82 | 73 | 65 | 57 |
| Avg temp (°F) | 77 | 80 | 75 | 65 | 57 | 48 |
| Avg low (°F) | 72 | 75 | 69 | 58 | 48 | 39 |
| Precipitation (in) | 7.1 | 4.1 | 8.7 | 10.1 | 5.7 | 3.6 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 63 | 68 | 69 | 75 | 84 | 73 | 58 | 69 | 70 | 63 | 57 |
| Relative humidity (%) | 74 | 73 | 74 | 77 | 81 | 86 | 88 | 85 | 83 | 80 | 77 | 75 |
| Wind speed (mph) | 9.9 | 9.7 | 9.8 | 8.9 | 7.8 | 6.9 | 6.8 | 6.5 | 7.6 | 8.5 | 8.6 | 9.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 63 | 68 | 69 | 75 | 84 |
| Relative humidity (%) | 74 | 73 | 74 | 77 | 81 | 86 |
| Wind speed (mph) | 9.9 | 9.7 | 9.8 | 8.9 | 7.8 | 6.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 58 | 69 | 70 | 63 | 57 |
| Relative humidity (%) | 88 | 85 | 83 | 80 | 77 | 75 |
| Wind speed (mph) | 6.8 | 6.5 | 7.6 | 8.5 | 8.6 | 9.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Tateyama, about 7 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.