Tokyo, Japan climate
Cfa Humid subtropical
Tokyo 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 34°F at night. Precipitation totals about 63 inches a year and is strongly seasonal — October alone averages 9.2 inches while February barely receives 2.22 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)Tokyo climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 50 | 52 | 58 | 67 | 74 | 79 | 86 | 88 | 82 | 72 | 62 | 54 |
| Avg temp (°F) | 42 | 43 | 49 | 58 | 66 | 71 | 78 | 80 | 74 | 64 | 55 | 46 |
| Avg low (°F) | 34 | 36 | 41 | 50 | 58 | 65 | 72 | 74 | 69 | 59 | 48 | 39 |
| Precipitation (in) | 2.4 | 2.2 | 4.6 | 5.3 | 5.5 | 6.6 | 6.2 | 6.1 | 8.9 | 9.2 | 3.8 | 2.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 50 | 52 | 58 | 67 | 74 | 79 |
| Avg temp (°F) | 42 | 43 | 49 | 58 | 66 | 71 |
| Avg low (°F) | 34 | 36 | 41 | 50 | 58 | 65 |
| Precipitation (in) | 2.4 | 2.2 | 4.6 | 5.3 | 5.5 | 6.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 88 | 82 | 72 | 62 | 54 |
| Avg temp (°F) | 78 | 80 | 74 | 64 | 55 | 46 |
| Avg low (°F) | 72 | 74 | 69 | 59 | 48 | 39 |
| Precipitation (in) | 6.2 | 6.1 | 8.9 | 9.2 | 3.8 | 2.3 |
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 (%) | 75 | 74 | 75 | 77 | 79 | 82 | 83 | 81 | 82 | 82 | 80 | 77 |
| Wind speed (mph) | 6.0 | 6.4 | 6.7 | 6.6 | 5.9 | 5.2 | 5.4 | 5.1 | 5.5 | 5.6 | 5.2 | 5.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 46 | 52 | 60 | 64 | 70 | 82 |
| Relative humidity (%) | 75 | 74 | 75 | 77 | 79 | 82 |
| Wind speed (mph) | 6.0 | 6.4 | 6.7 | 6.6 | 5.9 | 5.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 64 | 71 | 67 | 56 | 45 |
| Relative humidity (%) | 83 | 81 | 82 | 82 | 80 | 77 |
| Wind speed (mph) | 5.4 | 5.1 | 5.5 | 5.6 | 5.2 | 5.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Tokyo, about 5 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.