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Yokkaichi, Japan climate
Cfa Humid subtropical
Yokkaichi 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. Precipitation totals about 1807 mm a year and is strongly seasonal — September alone averages 287 mm while January barely receives 55 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)Yokkaichi climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 10 | 13 | 19 | 23 | 26 | 30 | 31 | 28 | 22 | 17 | 12 |
| Avg temp (°C) | 4 | 5 | 8 | 13 | 18 | 22 | 26 | 27 | 23 | 18 | 12 | 7 |
| Avg low (°C) | 0 | 0 | 3 | 8 | 13 | 18 | 22 | 23 | 19 | 13 | 7 | 2 |
| Precipitation (mm) | 55 | 67 | 118 | 154 | 189 | 249 | 208 | 159 | 287 | 183 | 80 | 58 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 10 | 13 | 19 | 23 | 26 |
| Avg temp (°C) | 4 | 5 | 8 | 13 | 18 | 22 |
| Avg low (°C) | 0 | 0 | 3 | 8 | 13 | 18 |
| Precipitation (mm) | 55 | 67 | 118 | 154 | 189 | 249 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 31 | 28 | 22 | 17 | 12 |
| Avg temp (°C) | 26 | 27 | 23 | 18 | 12 | 7 |
| Avg low (°C) | 22 | 23 | 19 | 13 | 7 | 2 |
| Precipitation (mm) | 208 | 159 | 287 | 183 | 80 | 58 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 67 | 67 | 65 | 70 | 81 | 75 | 63 | 70 | 66 | 63 | 63 |
| Relative humidity (%) | 81 | 78 | 76 | 76 | 78 | 82 | 83 | 82 | 81 | 80 | 80 | 82 |
| Wind speed (m/s) | 3.6 | 3.7 | 3.6 | 3.2 | 2.8 | 2.4 | 2.3 | 2.3 | 2.6 | 2.7 | 2.9 | 3.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 67 | 67 | 65 | 70 | 81 |
| Relative humidity (%) | 81 | 78 | 76 | 76 | 78 | 82 |
| Wind speed (m/s) | 3.6 | 3.7 | 3.6 | 3.2 | 2.8 | 2.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 63 | 70 | 66 | 63 | 63 |
| Relative humidity (%) | 83 | 82 | 81 | 80 | 80 | 82 |
| Wind speed (m/s) | 2.3 | 2.3 | 2.6 | 2.7 | 2.9 | 3.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Yokkaichi, about 4 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.