Climate averages 1991–2020
Nishio weather
in September.
A warm, very wet month: the 3rd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Nishio: daytime highs average 26.6°C and nights cool to about 20.7°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 214 mm of rain on roughly 13 days, which makes September a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average September day.
The nearest other city in this atlas is Anjō (11 km away). In September its highs average 27.1°C, about as warm as Nishio, with 192 mm of rain.
Among the 303 cities listed in Japan, Nishio ranks joint 93rd of 303 for the warmest September highs and 229th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Nishio is 0.9°C warmer than that mean.
From September to October, average highs fall by 5.2°C to 21.4°C, and monthly rainfall rises from 214 mm to 215 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
Nishio climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.6°C1.5°C | 1.5°C | 73 | 9.2 | 10.110 h |
| February | 9.6°C1.7°C | 1.7°C | 77 | 9.3 | 10.911 h |
| March | 13.0°C4.3°C | 4.3°C | 120 | 10.4 | 11.912 h |
| April | 17.6°C9.0°C | 9.0°C | 129 | 9.9 | 13.013 h |
| May | 21.8°C14.0°C | 14.0°C | 154 | 10.0 | 14.014 h |
| June | 24.9°C18.6°C | 18.6°C | 209 | 13.2 | 14.514 h |
| July | 28.3°C22.8°C | 22.8°C | 181 | 13.0 | 14.314 h |
| August | 29.7°C24.0°C | 24.0°C | 108 | 10.9 | 13.513 h |
| September, selected | 26.6°C20.7°C | 20.7°C | 214 | 13.0 | 12.412 h |
| October | 21.4°C14.9°C | 14.9°C | 215 | 11.1 | 11.311 h |
| November | 16.1°C9.0°C | 9.0°C | 99 | 8.0 | 10.410 h |
| December | 10.9°C3.9°C | 3.9°C | 68 | 8.5 | 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
- Anjō in SeptemberJapan · 11 kmHigh 27.1°C · Low 19.9°C · 192 mm rain
- Handa in SeptemberJapan · 11 kmHigh 26.6°C · Low 20.8°C · 192 mm rain
- Okazaki in SeptemberJapan · 14 kmHigh 27.2°C · Low 20.0°C · 239 mm rain
- Kariya in SeptemberJapan · 14 kmHigh 27.1°C · Low 20.3°C · 192 mm rain
- Gamagōri in SeptemberJapan · 17 kmHigh 26.7°C · Low 20.6°C · 230 mm rain
- Tōkai in SeptemberJapan · 22 kmHigh 26.8°C · Low 20.1°C · 192 mm rain
- Toyota in SeptemberJapan · 26 kmHigh 27.1°C · Low 19.5°C · 239 mm rain
- Toyohashi in SeptemberJapan · 32 kmHigh 27.0°C · Low 20.4°C · 236 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 Nishio) is explained once on the Nishio year overview and on the Sources, method and limits page.