Tome, Japan climate
Cfa Humid subtropical
Tome has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 29°C, while the coldest is January averaging around −4°C at night. Precipitation totals about 1039 mm a year and is strongly seasonal — September alone averages 148 mm while February barely receives 26 mm.
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)Tome climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 6 | 11 | 16 | 21 | 24 | 27 | 29 | 26 | 20 | 13 | 7 |
| Avg temp (°C) | 0 | 1 | 5 | 10 | 16 | 19 | 23 | 24 | 21 | 14 | 8 | 2 |
| Avg low (°C) | −4 | −4 | −1 | 4 | 11 | 16 | 20 | 21 | 17 | 9 | 3 | −2 |
| Precipitation (mm) | 32 | 26 | 75 | 101 | 88 | 93 | 129 | 115 | 148 | 141 | 48 | 43 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 6 | 11 | 16 | 21 | 24 |
| Avg temp (°C) | 0 | 1 | 5 | 10 | 16 | 19 |
| Avg low (°C) | −4 | −4 | −1 | 4 | 11 | 16 |
| Precipitation (mm) | 32 | 26 | 75 | 101 | 88 | 93 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 29 | 26 | 20 | 13 | 7 |
| Avg temp (°C) | 23 | 24 | 21 | 14 | 8 | 2 |
| Avg low (°C) | 20 | 21 | 17 | 9 | 3 | −2 |
| Precipitation (mm) | 129 | 115 | 148 | 141 | 48 | 43 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 65 | 67 | 66 | 69 | 77 | 79 | 71 | 72 | 66 | 62 | 64 |
| Relative humidity (%) | 84 | 81 | 78 | 78 | 80 | 83 | 85 | 84 | 83 | 81 | 82 | 85 |
| Wind speed (mph) | 10.2 | 10.2 | 9.7 | 8.5 | 7.3 | 6.3 | 5.8 | 6.1 | 7.0 | 7.6 | 8.1 | 9.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 65 | 67 | 66 | 69 | 77 |
| Relative humidity (%) | 84 | 81 | 78 | 78 | 80 | 83 |
| Wind speed (mph) | 10.2 | 10.2 | 9.7 | 8.5 | 7.3 | 6.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 71 | 72 | 66 | 62 | 64 |
| Relative humidity (%) | 85 | 84 | 83 | 81 | 82 | 85 |
| Wind speed (mph) | 5.8 | 6.1 | 7.0 | 7.6 | 8.1 | 9.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Mono, about 18 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.