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Yanagawa, Japan climate
Cfa Humid subtropical
Yanagawa has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 32°C, while the coldest is January averaging around 0°C at night. Precipitation totals about 1715 mm a year and is strongly seasonal — July alone averages 371 mm while January barely receives 40 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)Yanagawa climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 11 | 15 | 20 | 25 | 27 | 30 | 32 | 29 | 24 | 18 | 12 |
| Avg temp (°C) | 5 | 7 | 10 | 14 | 19 | 23 | 27 | 28 | 24 | 19 | 13 | 7 |
| Avg low (°C) | 0 | 2 | 4 | 9 | 14 | 20 | 24 | 25 | 20 | 14 | 8 | 2 |
| Precipitation (mm) | 40 | 74 | 97 | 124 | 149 | 265 | 371 | 212 | 157 | 91 | 74 | 59 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 11 | 15 | 20 | 25 | 27 |
| Avg temp (°C) | 5 | 7 | 10 | 14 | 19 | 23 |
| Avg low (°C) | 0 | 2 | 4 | 9 | 14 | 20 |
| Precipitation (mm) | 40 | 74 | 97 | 124 | 149 | 265 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 32 | 29 | 24 | 18 | 12 |
| Avg temp (°C) | 27 | 28 | 24 | 19 | 13 | 7 |
| Avg low (°C) | 24 | 25 | 20 | 14 | 8 | 2 |
| Precipitation (mm) | 371 | 212 | 157 | 91 | 74 | 59 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 73 | 70 | 67 | 68 | 81 | 73 | 66 | 67 | 60 | 65 | 71 |
| Relative humidity (%) | 79 | 77 | 77 | 78 | 80 | 85 | 86 | 84 | 84 | 81 | 80 | 79 |
| Wind speed (mph) | 4.3 | 4.2 | 4.0 | 3.4 | 2.8 | 2.5 | 2.6 | 2.7 | 3.1 | 3.4 | 3.5 | 4.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 73 | 70 | 67 | 68 | 81 |
| Relative humidity (%) | 79 | 77 | 77 | 78 | 80 | 85 |
| Wind speed (mph) | 4.3 | 4.2 | 4.0 | 3.4 | 2.8 | 2.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 66 | 67 | 60 | 65 | 71 |
| Relative humidity (%) | 86 | 84 | 84 | 81 | 80 | 79 |
| Wind speed (mph) | 2.6 | 2.7 | 3.1 | 3.4 | 3.5 | 4.0 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Kawasoe, about 9 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.