Climate averages 1991–2020
Uwajima weather
in September.
A warm, wet month: the 3rd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Uwajima: daytime highs average 27.9°C and nights cool to about 21.8°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 178 mm of rain on roughly 13 days, which makes September a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 24 min on an average September day.
The nearest other city in this atlas is Shinagawa (62 km away). In September its highs average 26.4°C, 1.5°C cooler than Uwajima, with 232 mm of rain.
Among the 303 cities listed in Japan, Uwajima ranks joint 8th of 303 for the warmest September highs and joint 113th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Uwajima is 2.2°C warmer than that mean.
From September to October, average highs fall by 4.7°C to 23.1°C, and monthly rainfall falls from 178 mm to 140 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
Uwajima climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.0°C4.0°C | 4.0°C | 60 | 8.6 | 10.210 h |
| February | 11.2°C4.3°C | 4.3°C | 76 | 9.1 | 11.011 h |
| March | 14.7°C6.9°C | 6.9°C | 112 | 11.1 | 12.012 h |
| April | 19.3°C11.3°C | 11.3°C | 129 | 10.3 | 13.013 h |
| May | 23.4°C15.9°C | 15.9°C | 150 | 10.4 | 13.914 h |
| June | 26.2°C20.0°C | 20.0°C | 273 | 15.4 | 14.314 h |
| July | 29.6°C24.0°C | 24.0°C | 201 | 13.8 | 14.114 h |
| August | 30.7°C24.9°C | 24.9°C | 137 | 12.8 | 13.413 h |
| September, selected | 27.9°C21.8°C | 21.8°C | 178 | 12.7 | 12.412 h |
| October | 23.1°C16.4°C | 16.4°C | 140 | 8.7 | 11.411 h |
| November | 17.8°C11.0°C | 11.0°C | 83 | 7.9 | 10.510 h |
| December | 12.4°C6.1°C | 6.1°C | 74 | 8.8 | 10.010 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
- Shinagawa in SeptemberJapan · 62 kmHigh 26.4°C · Low 19.8°C · 232 mm rain
- Matsuyama in SeptemberJapan · 71 kmHigh 27.3°C · Low 21.5°C · 187 mm rain
- Tsurusaki in SeptemberJapan · 81 kmHigh 26.2°C · Low 21.4°C · 192 mm rain
- Ōita in SeptemberJapan · 89 kmHigh 26.6°C · Low 21.0°C · 201 mm rain
- Saijō in SeptemberJapan · 96 kmHigh 27.7°C · Low 21.7°C · 216 mm rain
- Kochi in SeptemberJapan · 97 kmHigh 26.8°C · Low 20.6°C · 323 mm rain
- Beppu in SeptemberJapan · 99 kmHigh 27.0°C · Low 21.3°C · 201 mm rain
- Imabari in SeptemberJapan · 103 kmHigh 26.5°C · Low 21.9°C · 196 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 Uwajima) is explained once on the Uwajima year overview and on the Sources, method and limits page.