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 87°F, while the coldest is January averaging around 31°F at night. Around 83 inches of precipitation falls each year, peaking in December (10.0 inches) and easing off in May (4.7 inches).
☀️
Summers
Hot
Highs near 87°F in August.
❄️
Winters
Cold
Lows near 31°F in January.
🌧️
Rain
Very wet
About 83 in 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 (°F) | 43 | 44 | 51 | 61 | 71 | 77 | 84 | 87 | 79 | 69 | 59 | 48 |
| Avg temp (°F) | 37 | 37 | 43 | 52 | 61 | 69 | 76 | 79 | 72 | 61 | 51 | 42 |
| Avg low (°F) | 31 | 31 | 35 | 43 | 53 | 62 | 70 | 73 | 65 | 54 | 44 | 36 |
| Precipitation (in) | 8.2 | 5.0 | 5.5 | 5.0 | 4.7 | 6.6 | 8.8 | 7.2 | 8.1 | 6.2 | 8.1 | 10.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 43 | 44 | 51 | 61 | 71 | 77 |
| Avg temp (°F) | 37 | 37 | 43 | 52 | 61 | 69 |
| Avg low (°F) | 31 | 31 | 35 | 43 | 53 | 62 |
| Precipitation (in) | 8.2 | 5.0 | 5.5 | 5.0 | 4.7 | 6.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 87 | 79 | 69 | 59 | 48 |
| Avg temp (°F) | 76 | 79 | 72 | 61 | 51 | 42 |
| Avg low (°F) | 70 | 73 | 65 | 54 | 44 | 36 |
| Precipitation (in) | 8.8 | 7.2 | 8.1 | 6.2 | 8.1 | 10.0 |
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 (mph) | 12.7 | 12.0 | 11.1 | 9.8 | 8.3 | 7.2 | 7.8 | 7.8 | 9.1 | 9.9 | 11.2 | 12.8 |
| 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 (mph) | 12.7 | 12.0 | 11.1 | 9.8 | 8.3 | 7.2 |
| 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 (mph) | 7.8 | 7.8 | 9.1 | 9.9 | 11.2 | 12.8 |
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.