Climate averages 1991–2020
Shikokuchūō weather
in September.
A warm, very 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 Shikokuchūō: daytime highs average 27.1°C and nights cool to about 21.1°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 249 mm of rain on roughly 16 days, which makes September a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 25 min on an average September day.
The nearest other city in this atlas is Niihama (23 km away). In September its highs average 27.1°C, about as warm as Shikokuchūō, with 216 mm of rain.
Among the 303 cities listed in Japan, Shikokuchūō ranks joint 42nd of 303 for the warmest September highs and joint 279th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Shikokuchūō is 1.4°C warmer than that mean.
From September to October, average highs fall by 5.3°C to 21.8°C, and monthly rainfall falls from 249 mm to 189 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
Shikokuchūō climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.7°C2.9°C | 2.9°C | 80 | 13.7 | 10.210 h |
| February | 9.8°C2.9°C | 2.9°C | 90 | 12.1 | 10.911 h |
| March | 13.5°C5.5°C | 5.5°C | 128 | 13.4 | 12.012 h |
| April | 18.6°C10.2°C | 10.2°C | 142 | 11.9 | 13.013 h |
| May | 23.0°C15.0°C | 15.0°C | 170 | 12.1 | 13.914 h |
| June | 26.1°C19.4°C | 19.4°C | 268 | 16.3 | 14.414 h |
| July | 29.7°C23.7°C | 23.7°C | 265 | 17.5 | 14.214 h |
| August | 30.7°C24.6°C | 24.6°C | 182 | 16.6 | 13.413 h |
| September, selected | 27.1°C21.1°C | 21.1°C | 249 | 15.6 | 12.412 h |
| October | 21.8°C15.4°C | 15.4°C | 189 | 11.9 | 11.411 h |
| November | 16.5°C9.8°C | 9.8°C | 98 | 10.3 | 10.410 h |
| December | 11.1°C5.0°C | 5.0°C | 93 | 12.5 | 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
- Niihama in SeptemberJapan · 23 kmHigh 27.1°C · Low 21.4°C · 216 mm rain
- Saijō in SeptemberJapan · 34 kmHigh 27.7°C · Low 21.7°C · 216 mm rain
- Marugame in SeptemberJapan · 40 kmHigh 25.9°C · Low 21.1°C · 168 mm rain
- Kochi in SeptemberJapan · 47 kmHigh 26.8°C · Low 20.6°C · 323 mm rain
- Imabari in SeptemberJapan · 52 kmHigh 26.5°C · Low 21.9°C · 196 mm rain
- Onomichi in SeptemberJapan · 59 kmHigh 26.9°C · Low 20.3°C · 145 mm rain
- Fukuyama in SeptemberJapan · 59 kmHigh 27.3°C · Low 20.6°C · 145 mm rain
- Takamatsu in SeptemberJapan · 61 kmHigh 26.0°C · Low 21.3°C · 184 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 Shikokuchūō) is explained once on the Shikokuchūō year overview and on the Sources, method and limits page.