Home › Cities › Japan › Chichibu
Chichibu, Japan climate
Cfa Humid subtropical
Chichibu has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 88°F, while the coldest is January averaging around 25°F at night. Precipitation totals about 54 inches a year and is strongly seasonal — September alone averages 9.3 inches while December barely receives 1.21 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)Chichibu climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 50 | 56 | 66 | 75 | 79 | 86 | 88 | 80 | 69 | 61 | 52 |
| Avg temp (°F) | 35 | 37 | 44 | 54 | 63 | 69 | 76 | 78 | 71 | 60 | 49 | 39 |
| Avg low (°F) | 25 | 27 | 33 | 43 | 53 | 62 | 69 | 71 | 64 | 52 | 39 | 29 |
| Precipitation (in) | 1.6 | 1.2 | 2.7 | 3.5 | 4.0 | 5.7 | 7.6 | 7.4 | 9.3 | 8.0 | 1.9 | 1.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 50 | 56 | 66 | 75 | 79 |
| Avg temp (°F) | 35 | 37 | 44 | 54 | 63 | 69 |
| Avg low (°F) | 25 | 27 | 33 | 43 | 53 | 62 |
| Precipitation (in) | 1.6 | 1.2 | 2.7 | 3.5 | 4.0 | 5.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 88 | 80 | 69 | 61 | 52 |
| Avg temp (°F) | 76 | 78 | 71 | 60 | 49 | 39 |
| Avg low (°F) | 69 | 71 | 64 | 52 | 39 | 29 |
| Precipitation (in) | 7.6 | 7.4 | 9.3 | 8.0 | 1.9 | 1.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 46 | 52 | 60 | 64 | 70 | 82 | 75 | 64 | 71 | 67 | 56 | 45 |
| Relative humidity (%) | 76 | 75 | 74 | 74 | 76 | 80 | 81 | 81 | 83 | 82 | 80 | 78 |
| Wind speed (mph) | 4.6 | 5.1 | 5.2 | 5.3 | 4.8 | 4.3 | 4.1 | 4.0 | 4.2 | 3.9 | 3.7 | 4.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 46 | 52 | 60 | 64 | 70 | 82 |
| Relative humidity (%) | 76 | 75 | 74 | 74 | 76 | 80 |
| Wind speed (mph) | 4.6 | 5.1 | 5.2 | 5.3 | 4.8 | 4.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 64 | 71 | 67 | 56 | 45 |
| Relative humidity (%) | 81 | 81 | 83 | 82 | 80 | 78 |
| Wind speed (mph) | 4.1 | 4.0 | 4.2 | 3.9 | 3.7 | 4.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Chichibu, inside the city.
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.