Nikkō, Japan climate
Cfa Humid subtropical
Nikkō has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 82°F, while the coldest is January averaging around 25°F at night. Precipitation totals about 77 inches a year and is strongly seasonal — August alone averages 11.9 inches while February barely receives 1.61 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)Nikkō climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 43 | 44 | 51 | 61 | 69 | 74 | 80 | 82 | 76 | 66 | 57 | 47 |
| Avg temp (°F) | 33 | 34 | 40 | 50 | 60 | 66 | 72 | 74 | 68 | 57 | 47 | 37 |
| Avg low (°F) | 25 | 26 | 31 | 40 | 51 | 59 | 66 | 68 | 61 | 50 | 38 | 30 |
| Precipitation (in) | 1.9 | 1.6 | 3.9 | 5.3 | 6.6 | 8.9 | 11.3 | 11.9 | 11.8 | 8.6 | 3.4 | 1.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 43 | 44 | 51 | 61 | 69 | 74 |
| Avg temp (°F) | 33 | 34 | 40 | 50 | 60 | 66 |
| Avg low (°F) | 25 | 26 | 31 | 40 | 51 | 59 |
| Precipitation (in) | 1.9 | 1.6 | 3.9 | 5.3 | 6.6 | 8.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 80 | 82 | 76 | 66 | 57 | 47 |
| Avg temp (°F) | 72 | 74 | 68 | 57 | 47 | 37 |
| Avg low (°F) | 66 | 68 | 61 | 50 | 38 | 30 |
| Precipitation (in) | 11.3 | 11.9 | 11.8 | 8.6 | 3.4 | 1.8 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 55 | 60 | 65 | 71 | 82 | 81 | 72 | 75 | 68 | 55 | 49 |
| Relative humidity (%) | 82 | 80 | 77 | 75 | 76 | 80 | 82 | 82 | 83 | 83 | 82 | 82 |
| Wind speed (mph) | 5.7 | 6.1 | 5.8 | 5.2 | 4.3 | 3.6 | 3.3 | 3.2 | 3.6 | 3.8 | 4.0 | 4.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 55 | 60 | 65 | 71 | 82 |
| Relative humidity (%) | 82 | 80 | 77 | 75 | 76 | 80 |
| Wind speed (mph) | 5.7 | 6.1 | 5.8 | 5.2 | 4.3 | 3.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 72 | 75 | 68 | 55 | 49 |
| Relative humidity (%) | 82 | 82 | 83 | 83 | 82 | 82 |
| Wind speed (mph) | 3.3 | 3.2 | 3.6 | 3.8 | 4.0 | 4.9 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Imaichi, about 6 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.