Average temperature in September is 23.7 °C
Average daytime temperature is 28.1 °C
Average night temperature is 20.4 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: 16.9 °C
Number of sunny days: 5
Number of rainy days: 25
Number of snow days:
Precipitation sum: 107 mm
* Weather data for Shūnan 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 | 26.6 | 27.9 | 31.3 | 33.3 | 27.3 | 30.6 | 30.5 | 28.6 | 28.7 | 28.3 | 26.1 | 28.6 | 28.6 | 25.3 | 28.9 | 29.3 | 28.1 | 27.7 | 28.2 | 28.2 | 26.3 | 27.2 | 27 | 25.7 | 26.4 | 26.7 | 27.9 | 27.3 | 28.1 | 27.3 |
| Apparent max temperature | 30.6 | 32 | 35.9 | 38.3 | 32.5 | 34.4 | 32.6 | 32.3 | 31.9 | 33.4 | 30.4 | 33 | 32.7 | 30.1 | 33.6 | 34.4 | 32.7 | 32.4 | 32.2 | 30.7 | 28.5 | 29.7 | 27.8 | 25.6 | 28.9 | 28.6 | 30.8 | 28.7 | 30.9 | 29.4 |
| Mean temperature | 24 | 24.5 | 25.8 | 27.1 | 23.5 | 23.9 | 24.6 | 23.1 | 24.1 | 23.5 | 21.8 | 23.8 | 24.7 | 23.1 | 24.9 | 25.5 | 24.5 | 23.3 | 24 | 25 | 22.9 | 21.1 | 21.7 | 22.1 | 22.8 | 23.4 | 24.1 | 21.8 | 22.3 | 22.6 |
| Apparent mean temperature | 26.1 | 24.2 | 24.5 | 25.4 | 24.4 | 18.7 | 21.8 | 19.5 | 23.4 | 23.6 | 22 | 23.4 | 26 | 25.6 | 25.9 | 26.8 | 24.7 | 25 | 23.5 | 26.4 | 22.8 | 18.9 | 15.9 | 20 | 23.6 | 24.1 | 23.2 | 18.5 | 20.1 | 19.7 |
| Minimum temperature | 22 | 21 | 21.2 | 23.1 | 21 | 18.6 | 20.4 | 17.6 | 21.1 | 20.3 | 19.2 | 20.2 | 22.9 | 21.7 | 21.7 | 22.7 | 21.3 | 21 | 20 | 22.7 | 20.3 | 17.3 | 18 | 19.8 | 20.3 | 21.5 | 20.8 | 16.9 | 18.1 | 18.6 |
| Apparent min temperature | 28.2 | 28.5 | 29.6 | 30.5 | 28 | 25.7 | 25.6 | 25.6 | 26.8 | 27.3 | 25.4 | 27.5 | 28 | 27.7 | 29.3 | 29.9 | 28.2 | 27.5 | 28 | 28.3 | 25.7 | 23.5 | 20.8 | 22.1 | 25.8 | 26 | 26.5 | 23.5 | 24.4 | 24.5 |
| 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 | 12.9 | 12.8 | 12.8 | 12.8 | 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) | 0.1 | 7.1 | 11.8 | 11.2 | 7.2 | 11.8 | 11.8 | 11.8 | 11.2 | 7.7 | 6.6 | 11.7 | 9.2 | 1.4 | 8.7 | 11.1 | 9.9 | 8.3 | 10.8 | 7.9 | 7.7 | 6.3 | 9.1 | 10.8 | 5.5 | 10.9 | 11 | 10.3 | 11 | 10 |
| Precipitation (mm) | 4.9 | 0.4 | 0 | 0.3 | 8.8 | 1.9 | 0.2 | 3.4 | 0 | 6.3 | 3.1 | 2.7 | 5.3 | 13.5 | 3.8 | 3.1 | 5.9 | 21 | 1.6 | 1.2 | 6.9 | 3.2 | 0 | 2 | 3.4 | 0 | 0.6 | 1.1 | 0 | 2.3 |
| Precipitation hours | 19 | 3 | 0 | 2 | 8 | 7 | 1 | 4 | 0 | 17 | 9 | 12 | 15 | 17 | 10 | 12 | 9 | 13 | 7 | 3 | 9 | 4 | 0 | 4 | 11 | 0 | 4 | 4 | 0 | 4 |
| Wind speed (m/s) | 12.4 | 9.2 | 8 | 12.4 | 9.6 | 15.1 | 17.6 | 9 | 13.2 | 8.6 | 6.8 | 6.5 | 14 | 11.3 | 13.7 | 15.1 | 16.2 | 12.2 | 12.1 | 16.3 | 17.3 | 10.6 | 20.1 | 20.6 | 12.1 | 12.6 | 17.3 | 18.2 | 11.8 | 12.9 |
In September 2023, the highest daytime temperature in Shūnan was 33.3°C.
While the minimum temperature at night dropped to 16.9°C.
The average nighttime and daytime temperatures during September in Shūnan are 20.4°C and 28.1°C respectively.
The precipitation sum in September is about 107 mm.