Climate averages 1991–2020
Shikokuchūō weather
in August.
A hot, very wet month: the warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Shikokuchūō: daytime highs average 30.7°C and nights cool to about 24.6°C. By daytime temperature it is the warmest month of the year.
Expect about 182 mm of rain on roughly 17 days, which makes August a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 25 min on an average August day.
The nearest other city in this atlas is Niihama (23 km away). In August its highs average 30.6°C, about as warm as Shikokuchūō, with 151 mm of rain.
Among the 303 cities listed in Japan, Shikokuchūō ranks joint 38th of 303 for the warmest August highs and 261st of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Shikokuchūō is 1.5°C warmer than that mean.
From August to September, average highs fall by 3.6°C to 27.1°C, and monthly rainfall rises from 182 mm to 249 mm.
The annual picture
August 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, selected | 30.7°C24.6°C | 24.6°C | 182 | 16.6 | 13.413 h |
| September | 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
August in nearby cities
- Niihama in AugustJapan · 23 kmHigh 30.6°C · Low 24.8°C · 151 mm rain
- Saijō in AugustJapan · 34 kmHigh 31.3°C · Low 25.2°C · 151 mm rain
- Marugame in AugustJapan · 40 kmHigh 29.4°C · Low 24.5°C · 106 mm rain
- Kochi in AugustJapan · 47 kmHigh 29.6°C · Low 23.6°C · 297 mm rain
- Imabari in AugustJapan · 52 kmHigh 29.7°C · Low 25.0°C · 142 mm rain
- Onomichi in AugustJapan · 59 kmHigh 30.5°C · Low 24.0°C · 107 mm rain
- Fukuyama in AugustJapan · 59 kmHigh 31.0°C · Low 24.4°C · 107 mm rain
- Takamatsu in AugustJapan · 61 kmHigh 29.3°C · Low 24.6°C · 121 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.