Climate averages 1991–2020
Iga 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 Iga: daytime highs average 26.8°C and nights cool to about 19.6°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 223 mm of rain on roughly 15 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 Nabari (16 km away). In September its highs average 26.8°C, about as warm as Iga, with 219 mm of rain.
Among the 303 cities listed in Japan, Iga ranks joint 72nd of 303 for the warmest September highs and joint 246th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Iga is 1.2°C warmer than that mean.
From September to October, average highs fall by 5.8°C to 21.0°C, and monthly rainfall falls from 223 mm to 202 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
Iga climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.3°C0.1°C | 0.1°C | 63 | 6.5 | 10.110 h |
| February | 8.4°C0.3°C | 0.3°C | 70 | 8.0 | 10.911 h |
| March | 12.4°C2.8°C | 2.8°C | 119 | 12.0 | 11.912 h |
| April | 17.8°C7.8°C | 7.8°C | 134 | 10.9 | 13.013 h |
| May | 22.5°C13.1°C | 13.1°C | 158 | 11.8 | 14.014 h |
| June | 25.8°C17.8°C | 17.8°C | 220 | 15.0 | 14.414 h |
| July | 29.4°C22.2°C | 22.2°C | 222 | 18.5 | 14.214 h |
| August | 30.8°C23.2°C | 23.2°C | 174 | 15.6 | 13.513 h |
| September, selected | 26.8°C19.6°C | 19.6°C | 223 | 14.6 | 12.412 h |
| October | 21.0°C13.5°C | 13.5°C | 202 | 10.9 | 11.311 h |
| November | 15.5°C7.4°C | 7.4°C | 93 | 7.9 | 10.410 h |
| December | 9.9°C2.3°C | 2.3°C | 62 | 6.7 | 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
- Nabari in SeptemberJapan · 16 kmHigh 26.8°C · Low 19.5°C · 219 mm rain
- Kōka in SeptemberJapan · 25 kmHigh 26.3°C · Low 19.2°C · 202 mm rain
- Nara-shi in SeptemberJapan · 31 kmHigh 27.3°C · Low 19.7°C · 140 mm rain
- Jōyō in SeptemberJapan · 32 kmHigh 26.8°C · Low 19.3°C · 140 mm rain
- Kusatsu in SeptemberJapan · 33 kmHigh 26.7°C · Low 19.4°C · 153 mm rain
- Uji in SeptemberJapan · 34 kmHigh 26.9°C · Low 19.4°C · 187 mm rain
- Tsu in SeptemberJapan · 35 kmHigh 26.8°C · Low 20.8°C · 253 mm rain
- Ōtsu in SeptemberJapan · 36 kmHigh 26.3°C · Low 18.9°C · 187 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 Iga) is explained once on the Iga year overview and on the Sources, method and limits page.