Nanao, Japan climate
Cfa Humid subtropical
Nanao has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 31°C, while the coldest is January averaging around 0°C at night. Around 2117 mm of precipitation falls each year, peaking in December (255 mm) and easing off in May (120 mm).
☀️
Summers
Hot
Highs near 31°C in August.
❄️
Winters
Cold
Lows near 0°C in January.
🌧️
Rain
Very wet
About 2117 mm of rain a year.
Wettest in December
⛅
Sky & trend
Often grey
Overcast skies dominate much of the year.
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)Nanao climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 7 | 11 | 16 | 22 | 25 | 29 | 31 | 26 | 21 | 15 | 9 |
| Avg temp (°C) | 3 | 3 | 6 | 11 | 16 | 20 | 25 | 26 | 22 | 16 | 11 | 5 |
| Avg low (°C) | 0 | −1 | 2 | 6 | 12 | 17 | 21 | 23 | 18 | 12 | 7 | 2 |
| Precipitation (mm) | 207 | 126 | 139 | 126 | 120 | 169 | 223 | 183 | 207 | 157 | 206 | 255 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 7 | 11 | 16 | 22 | 25 |
| Avg temp (°C) | 3 | 3 | 6 | 11 | 16 | 20 |
| Avg low (°C) | 0 | −1 | 2 | 6 | 12 | 17 |
| Precipitation (mm) | 207 | 126 | 139 | 126 | 120 | 169 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 31 | 26 | 21 | 15 | 9 |
| Avg temp (°C) | 25 | 26 | 22 | 16 | 11 | 5 |
| Avg low (°C) | 21 | 23 | 18 | 12 | 7 | 2 |
| Precipitation (mm) | 223 | 183 | 207 | 157 | 206 | 255 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 92 | 87 | 76 | 68 | 68 | 77 | 75 | 63 | 70 | 68 | 76 | 88 |
| Relative humidity (%) | 78 | 76 | 74 | 75 | 77 | 80 | 83 | 79 | 77 | 74 | 75 | 78 |
| Wind speed (km/h) | 20.4 | 19.4 | 17.9 | 15.8 | 13.4 | 11.7 | 12.6 | 12.6 | 14.6 | 15.9 | 18.1 | 20.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 92 | 87 | 76 | 68 | 68 | 77 |
| Relative humidity (%) | 78 | 76 | 74 | 75 | 77 | 80 |
| Wind speed (km/h) | 20.4 | 19.4 | 17.9 | 15.8 | 13.4 | 11.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 63 | 70 | 68 | 76 | 88 |
| Relative humidity (%) | 83 | 79 | 77 | 74 | 75 | 78 |
| Wind speed (km/h) | 12.6 | 12.6 | 14.6 | 15.9 | 18.1 | 20.6 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Nanao, about 3 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.