Average temperature in September is 25.8 °C
Average daytime temperature is 29.9 °C
Average night temperature is 22.5 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: 19.4 °C
Number of sunny days: 9
Number of rainy days: 21
Number of snow days:
Precipitation sum: 116 mm
* Weather data for Ōkawa Japan is based on climate observations for 2023 year
| Settembre (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 28.3 | 30.4 | 32.5 | 33.3 | 31.1 | 30.4 | 31.6 | 31.2 | 31.9 | 31.8 | 30.4 | 32.1 | 32 | 27.6 | 30.3 | 30.6 | 26.7 | 29.2 | 28.9 | 29.8 | 28.7 | 26.4 | 27.9 | 27.2 | 29.4 | 29.3 | 29.3 | 29.3 | 29.8 | 28.6 |
| Apparent max temperature | 33.5 | 35.2 | 38.7 | 37.9 | 34.2 | 32.3 | 32.8 | 34.3 | 35.7 | 37.2 | 34.8 | 36.5 | 38.2 | 32.6 | 35.6 | 36.8 | 32.2 | 34.4 | 34.4 | 33.8 | 32.9 | 30 | 29.4 | 27.2 | 34.7 | 34.4 | 33.8 | 32.1 | 32.9 | 32.1 |
| Mean temperature | 25.5 | 27 | 27.8 | 28.1 | 27.1 | 26.9 | 26.4 | 25.7 | 26.1 | 25.3 | 25.8 | 27.3 | 26.6 | 25.3 | 27.4 | 26.4 | 25.1 | 25.7 | 25.5 | 27.4 | 25.2 | 23.5 | 23.8 | 23.2 | 25.4 | 26.2 | 24.8 | 23.7 | 24.2 | 24.2 |
| Apparent mean temperature | 28.5 | 29.5 | 27 | 28 | 27.6 | 24.2 | 23.2 | 22.8 | 25.5 | 25.3 | 26.1 | 27.8 | 28.7 | 27.2 | 30.5 | 28.7 | 26.6 | 27.4 | 26.4 | 28.3 | 26 | 24.2 | 18.3 | 21 | 26.4 | 28.6 | 23.9 | 22.4 | 22.6 | 24.4 |
| Minimum temperature | 23.7 | 24.3 | 22.5 | 24.4 | 23.6 | 23.5 | 21 | 20.3 | 21.9 | 22.3 | 22.1 | 23.2 | 24.2 | 23.4 | 25.1 | 24 | 22.8 | 23.2 | 22.2 | 24.8 | 22.5 | 21.8 | 20.4 | 20.3 | 22.5 | 23.4 | 20.7 | 19.4 | 19.8 | 21.1 |
| Apparent min temperature | 30.5 | 32.3 | 32.4 | 31.8 | 30.7 | 27.9 | 27.8 | 27.8 | 29.5 | 29.6 | 29.9 | 31.7 | 31.7 | 30.3 | 32.8 | 31.8 | 29.8 | 30.8 | 30.2 | 31 | 28.4 | 26.7 | 23.6 | 23.4 | 29.5 | 31.3 | 28.6 | 26.6 | 27.7 | 27.9 |
| Settembre | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 12.9 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12 | 12 | 12 | 11.9 | 11.9 |
| Sunshine duration (h) | 0 | 5.4 | 11.7 | 11.7 | 11.4 | 11.7 | 11.7 | 11.6 | 11.6 | 11 | 11 | 11.4 | 7 | 0.9 | 11.1 | 8.1 | 3.3 | 9.2 | 11.2 | 8.3 | 8.9 | 4.2 | 7.7 | 11 | 10.9 | 10.8 | 10.8 | 10.9 | 10.9 | 10.2 |
| Precipitation (mm) | 5.7 | 0 | 0 | 0 | 2.2 | 0.3 | 0 | 0.2 | 0 | 13.5 | 0.3 | 0 | 20.4 | 13.4 | 2.7 | 5.9 | 25 | 9.6 | 0.1 | 4.3 | 5.4 | 3.9 | 0 | 0 | 0.5 | 0.5 | 0.1 | 0.1 | 0 | 1.9 |
| Precipitation hours | 8 | 0 | 0 | 0 | 4 | 3 | 0 | 1 | 0 | 5 | 3 | 0 | 12 | 19 | 8 | 7 | 13 | 17 | 1 | 9 | 11 | 7 | 0 | 0 | 3 | 4 | 1 | 1 | 0 | 5 |
| Wind speed (m/s) | 10 | 6.4 | 15.8 | 17.8 | 20.9 | 27.9 | 23.7 | 20.1 | 19.2 | 25.1 | 15 | 11.8 | 17.4 | 10.7 | 12.2 | 11 | 10 | 12.1 | 11.4 | 25 | 19 | 11.7 | 23.1 | 23.3 | 9.4 | 6.6 | 13.8 | 14.3 | 9.2 | 14 |
In September 2023, the highest daytime temperature in Ōkawa was 33.3°C.
While the minimum temperature at night dropped to 19.4°C.
The average nighttime and daytime temperatures during September in Ōkawa are 22.5°C and 29.9°C respectively.
The precipitation sum in September is about 116 mm.