Average temperature in September is 25.5 °C
Average daytime temperature is 29.7 °C
Average night temperature is 22.3 °C
Absolute maximum temperature: 33 °C
Absolute minimum temperature: 18.3 °C
Number of sunny days: 5
Number of rainy days: 25
Number of snow days:
Precipitation sum: 97 mm
* Weather data for Iizuka Japan is based on climate observations for 2023 year
| September (°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 | 28.2 | 31.5 | 31.5 | 33 | 29.4 | 30 | 30.6 | 29.4 | 30.3 | 30.8 | 30.5 | 31.3 | 32.2 | 27.1 | 31.8 | 32.4 | 28.2 | 29.9 | 29.9 | 30 | 28.3 | 26.2 | 27.8 | 26.5 | 28.2 | 30.1 | 29.2 | 28.6 | 29.4 | 29.4 |
| Apparent max temperature | 34.4 | 36 | 36.8 | 37.4 | 33.5 | 32.5 | 32.8 | 32.3 | 33.4 | 35.6 | 34.9 | 35.7 | 37.5 | 32.2 | 36.4 | 37.8 | 31.4 | 35.1 | 35.3 | 33.7 | 31.6 | 29.6 | 29.7 | 26.6 | 32.1 | 33.8 | 33.3 | 31.1 | 32.6 | 32.2 |
| Mean temperature | 25.8 | 26.8 | 27.7 | 27.3 | 25.1 | 25.3 | 25.3 | 25 | 25.7 | 26 | 25.5 | 26.7 | 26.4 | 24.9 | 27.2 | 26.6 | 25.2 | 26.1 | 26 | 27.2 | 24.9 | 23 | 22.8 | 23.2 | 24.4 | 26 | 24.8 | 24.3 | 24.8 | 24.1 |
| Apparent mean temperature | 29.3 | 29.5 | 29.4 | 27.5 | 26.5 | 22.9 | 23.5 | 25.3 | 26 | 27.3 | 26.4 | 27.6 | 28.3 | 27.9 | 28.8 | 27.9 | 25.6 | 27.7 | 26.3 | 27.1 | 26.4 | 24.1 | 19 | 21.3 | 26 | 26.6 | 23.9 | 24.7 | 23.7 | 22.7 |
| Minimum temperature | 24 | 24.2 | 24.7 | 23 | 22.3 | 20.2 | 20.6 | 22.2 | 22.4 | 23 | 22.4 | 23.1 | 24.2 | 23.3 | 24.2 | 23.4 | 22.5 | 23.3 | 22.3 | 25.2 | 22.1 | 21.3 | 18.3 | 19.7 | 22.1 | 22.2 | 21 | 21.3 | 20.9 | 20.2 |
| Apparent min temperature | 31.7 | 32.4 | 32.5 | 31.7 | 29.7 | 28 | 27.9 | 27.9 | 29.2 | 30.3 | 30.2 | 31.3 | 31.2 | 30.3 | 32.4 | 31.6 | 29.2 | 30.5 | 30.6 | 30.3 | 28.5 | 26.5 | 24 | 24.2 | 28.6 | 30.6 | 28.5 | 27.3 | 27.9 | 27.1 |
| September | 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) | 1 | 6.3 | 11.8 | 11.7 | 9.3 | 11.7 | 11.7 | 11.7 | 11.7 | 10 | 10.5 | 11.6 | 8.7 | 1.4 | 11.5 | 9 | 7.9 | 10.5 | 9.4 | 7.5 | 9.3 | 5.2 | 7.4 | 11.1 | 10.3 | 10.1 | 10.9 | 11 | 10.9 | 9.7 |
| Precipitation (mm) | 2.5 | 0 | 0 | 0.1 | 16 | 0.8 | 0.7 | 0.9 | 0 | 0.3 | 1.8 | 0.5 | 3.8 | 16.1 | 3.6 | 4 | 10.6 | 0.8 | 1.1 | 0.8 | 8.7 | 10.5 | 0.2 | 0 | 8.8 | 0.7 | 0.5 | 0.6 | 0 | 2.8 |
| Precipitation hours | 9 | 0 | 0 | 1 | 13 | 3 | 3 | 4 | 0 | 2 | 5 | 2 | 10 | 17 | 4 | 2 | 9 | 5 | 4 | 7 | 16 | 8 | 1 | 0 | 11 | 5 | 4 | 2 | 0 | 9 |
| Wind speed (m/s) | 6.2 | 7.3 | 13.7 | 17.3 | 16.2 | 24.5 | 19.2 | 15.5 | 14 | 10.6 | 10.4 | 10.6 | 13.7 | 11.3 | 15.3 | 11.9 | 14.3 | 13.8 | 12.1 | 25.5 | 20.1 | 10.9 | 18.4 | 21.1 | 14.1 | 8.3 | 14.7 | 16.7 | 10.1 | 14.6 |
In September 2023, the highest daytime temperature in Iizuka was 33°C.
While the minimum temperature at night dropped to 18.3°C.
The average nighttime and daytime temperatures during September in Iizuka are 22.3°C and 29.7°C respectively.
The precipitation sum in September is about 97 mm.