Climate averages 1991–2020
Akashi 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 Akashi: daytime highs average 26.4°C and nights cool to about 21.2°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 194 mm of rain on roughly 13 days, which makes September a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 25 min on an average September day.
The nearest other city in this atlas is Miki (16 km away). In September its highs average 26.5°C, about as warm as Akashi, with 194 mm of rain.
Among the 303 cities listed in Japan, Akashi ranks joint 110th of 303 for the warmest September highs and joint 177th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Akashi is 0.8°C warmer than that mean.
From September to October, average highs fall by 5.1°C to 21.3°C, and monthly rainfall falls from 194 mm to 151 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
Akashi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.3°C2.2°C | 2.2°C | 49 | 6.0 | 10.110 h |
| February | 9.2°C2.1°C | 2.1°C | 61 | 7.1 | 10.911 h |
| March | 12.4°C4.8°C | 4.8°C | 100 | 9.8 | 11.912 h |
| April | 17.1°C9.6°C | 9.6°C | 116 | 9.8 | 13.013 h |
| May | 21.4°C14.7°C | 14.7°C | 139 | 9.9 | 14.014 h |
| June | 24.6°C19.2°C | 19.2°C | 176 | 12.6 | 14.414 h |
| July | 28.0°C23.6°C | 23.6°C | 187 | 13.6 | 14.214 h |
| August | 29.5°C24.7°C | 24.7°C | 117 | 11.7 | 13.513 h |
| September, selected | 26.4°C21.2°C | 21.2°C | 194 | 12.7 | 12.412 h |
| October | 21.3°C15.5°C | 15.5°C | 151 | 9.1 | 11.311 h |
| November | 16.0°C9.7°C | 9.7°C | 76 | 7.2 | 10.410 h |
| December | 10.7°C4.8°C | 4.8°C | 61 | 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
- Miki in SeptemberJapan · 16 kmHigh 26.5°C · Low 20.7°C · 194 mm rain
- Kobe in SeptemberJapan · 17 kmHigh 27.1°C · Low 21.2°C · 191 mm rain
- Kakogawachō-honmachi in SeptemberJapan · 21 kmHigh 26.1°C · Low 20.8°C · 202 mm rain
- Nishinomiya in SeptemberJapan · 30 kmHigh 27.4°C · Low 20.9°C · 191 mm rain
- Sandachō in SeptemberJapan · 32 kmHigh 26.3°C · Low 19.7°C · 196 mm rain
- Himeji in SeptemberJapan · 33 kmHigh 26.0°C · Low 20.6°C · 202 mm rain
- Takarazuka in SeptemberJapan · 36 kmHigh 27.4°C · Low 20.5°C · 191 mm rain
- Izumisano in SeptemberJapan · 39 kmHigh 27.8°C · Low 20.4°C · 176 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 Akashi) is explained once on the Akashi year overview and on the Sources, method and limits page.
Miki lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.