Climate averages 1991–2020
Tsu weather
in September.
A warm, very wet month: the 3rd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Tsu: daytime highs average 26.8°C and nights cool to about 20.8°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 253 mm of rain on roughly 16 days, which makes September a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average September day.
The nearest other city in this atlas is Matsusaka (17 km away). In September its highs average 26.7°C, about as warm as Tsu, with 272 mm of rain.
Among the 303 cities listed in Japan, Tsu ranks joint 72nd of 303 for the warmest September highs and 285th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Tsu is 1.1°C warmer than that mean.
From September to October, average highs fall by 5.2°C to 21.6°C, and monthly rainfall falls from 253 mm to 230 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Tsu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.7°C2.3°C | 2.3°C | 68 | 6.4 | 10.110 h |
| February | 9.6°C2.4°C | 2.4°C | 75 | 7.8 | 10.911 h |
| March | 13.2°C4.7°C | 4.7°C | 128 | 11.6 | 11.912 h |
| April | 18.0°C9.2°C | 9.2°C | 146 | 10.6 | 13.013 h |
| May | 22.3°C14.1°C | 14.1°C | 175 | 11.9 | 14.014 h |
| June | 25.5°C18.7°C | 18.7°C | 235 | 15.3 | 14.414 h |
| July | 29.3°C23.0°C | 23.0°C | 221 | 17.9 | 14.214 h |
| August | 30.3°C24.1°C | 24.1°C | 179 | 15.8 | 13.513 h |
| September, selected | 26.8°C20.8°C | 20.8°C | 253 | 15.5 | 12.412 h |
| October | 21.6°C15.1°C | 15.1°C | 230 | 11.8 | 11.311 h |
| November | 16.3°C9.4°C | 9.4°C | 106 | 8.1 | 10.410 h |
| December | 11.1°C4.5°C | 4.5°C | 69 | 7.2 | 9.910 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Matsusaka in SeptemberJapan · 17 kmHigh 26.7°C · Low 20.6°C · 272 mm rain
- Suzuka in SeptemberJapan · 18 kmHigh 26.7°C · Low 20.4°C · 225 mm rain
- Yokkaichi in SeptemberJapan · 28 kmHigh 26.8°C · Low 20.1°C · 225 mm rain
- Ise in SeptemberJapan · 32 kmHigh 26.3°C · Low 21.3°C · 247 mm rain
- Iga in SeptemberJapan · 35 kmHigh 26.8°C · Low 19.6°C · 223 mm rain
- Kuwana in SeptemberJapan · 38 kmHigh 26.8°C · Low 19.6°C · 222 mm rain
- Handa in SeptemberJapan · 42 kmHigh 26.6°C · Low 20.8°C · 192 mm rain
- Nabari in SeptemberJapan · 42 kmHigh 26.8°C · Low 19.5°C · 219 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tsu) is explained once on the Tsu year overview and on the Sources, method and limits page.