Tsu, Japan climate
Cfa Humid subtropical
Tsu 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 2°C at night. Precipitation totals about 1613 mm a year and is strongly seasonal — September alone averages 277 mm while December barely receives 47 mm.
☀️
Summers
Hot
Highs near 32°C in August.
❄️
Winters
Chilly
Lows near 2°C in January.
🌧️
Rain
Very wet
About 1613 mm of rain a year.
Wettest in September
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Sky & trend
Often cloudy
Cloudy skies 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)Tsu climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 10 | 13 | 19 | 23 | 26 | 30 | 32 | 28 | 23 | 17 | 12 |
| Avg temp (°C) | 6 | 6 | 9 | 14 | 19 | 23 | 27 | 28 | 24 | 19 | 13 | 8 |
| Avg low (°C) | 2 | 2 | 5 | 10 | 15 | 20 | 24 | 25 | 21 | 16 | 10 | 5 |
| Precipitation (mm) | 48 | 57 | 104 | 129 | 167 | 202 | 174 | 145 | 277 | 186 | 76 | 47 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 10 | 13 | 19 | 23 | 26 |
| Avg temp (°C) | 6 | 6 | 9 | 14 | 19 | 23 |
| Avg low (°C) | 2 | 2 | 5 | 10 | 15 | 20 |
| Precipitation (mm) | 48 | 57 | 104 | 129 | 167 | 202 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 32 | 28 | 23 | 17 | 12 |
| Avg temp (°C) | 27 | 28 | 24 | 19 | 13 | 8 |
| Avg low (°C) | 24 | 25 | 21 | 16 | 10 | 5 |
| Precipitation (mm) | 174 | 145 | 277 | 186 | 76 | 47 |
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 (%) | 85 | 83 | 81 | 80 | 81 | 84 | 85 | 84 | 86 | 87 | 86 | 86 |
| Wind speed (m/s) | 0.4 | 0.5 | 0.5 | 0.4 | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 67 | 67 | 65 | 70 | 81 |
| Relative humidity (%) | 85 | 83 | 81 | 80 | 81 | 84 |
| Wind speed (m/s) | 0.4 | 0.5 | 0.5 | 0.4 | 0.3 | 0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 63 | 70 | 66 | 63 | 63 |
| Relative humidity (%) | 85 | 84 | 86 | 87 | 86 | 86 |
| Wind speed (m/s) | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Tsu, inside the city.
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.