Home › Cities › Japan › Imarichō-kō
Imarichō-kō, Japan climate
Cfa Humid subtropical
Imarichō-kō has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 89°F, while the coldest is January averaging around 38°F at night. Precipitation totals about 78 inches a year and is strongly seasonal — July alone averages 13.5 inches while January barely receives 2.50 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)Imarichō-kō climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 51 | 53 | 59 | 67 | 75 | 80 | 86 | 89 | 84 | 75 | 65 | 55 |
| Avg temp (°F) | 45 | 46 | 52 | 60 | 67 | 73 | 80 | 82 | 77 | 68 | 58 | 49 |
| Avg low (°F) | 38 | 39 | 45 | 52 | 60 | 68 | 76 | 77 | 71 | 62 | 51 | 42 |
| Precipitation (in) | 2.5 | 3.2 | 4.8 | 6.0 | 6.7 | 12.9 | 13.5 | 10.1 | 7.7 | 3.9 | 4.0 | 3.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 51 | 53 | 59 | 67 | 75 | 80 |
| Avg temp (°F) | 45 | 46 | 52 | 60 | 67 | 73 |
| Avg low (°F) | 38 | 39 | 45 | 52 | 60 | 68 |
| Precipitation (in) | 2.5 | 3.2 | 4.8 | 6.0 | 6.7 | 12.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 89 | 84 | 75 | 65 | 55 |
| Avg temp (°F) | 80 | 82 | 77 | 68 | 58 | 49 |
| Avg low (°F) | 76 | 77 | 71 | 62 | 51 | 42 |
| Precipitation (in) | 13.5 | 10.1 | 7.7 | 3.9 | 4.0 | 3.1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 75 | 74 | 72 | 72 | 82 | 72 | 65 | 68 | 64 | 69 | 74 |
| Relative humidity (%) | 79 | 77 | 77 | 78 | 80 | 85 | 86 | 84 | 84 | 81 | 80 | 79 |
| Wind speed (mph) | 4.3 | 4.2 | 4.0 | 3.4 | 2.8 | 2.5 | 2.6 | 2.7 | 3.1 | 3.4 | 3.5 | 4.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 75 | 74 | 72 | 72 | 82 |
| Relative humidity (%) | 79 | 77 | 77 | 78 | 80 | 85 |
| Wind speed (mph) | 4.3 | 4.2 | 4.0 | 3.4 | 2.8 | 2.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 65 | 68 | 64 | 69 | 74 |
| Relative humidity (%) | 86 | 84 | 84 | 81 | 80 | 79 |
| Wind speed (mph) | 2.6 | 2.7 | 3.1 | 3.4 | 3.5 | 4.0 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Sasebo, about 19 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.