Average temperature in September is 10.3 °C
Average daytime temperature is 15.2 °C
Average night temperature is 6.2 °C
Absolute maximum temperature: 22.2 °C
Absolute minimum temperature: 2.4 °C
Number of sunny days: 12
Number of rainy days: 18
Number of snow days:
Precipitation sum: 177 mm
* Weather data for Chillán Chile 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 | 13.2 | 10.5 | 14.4 | 13.5 | 10.9 | 15.1 | 14.3 | 15.5 | 13.1 | 13.6 | 14 | 14.7 | 13.9 | 14.6 | 17.6 | 14.9 | 13.5 | 14.1 | 16.6 | 16.9 | 16.9 | 15.1 | 17 | 16.7 | 15.7 | 14.8 | 16.1 | 15.8 | 21.2 | 22.2 |
| Apparent max temperature | 12.7 | 9.7 | 13.3 | 11 | 9.4 | 13.2 | 11.1 | 15 | 10.2 | 10.4 | 11.8 | 11.7 | 11.1 | 13.5 | 15.2 | 11.6 | 10.5 | 11.5 | 13.4 | 12.7 | 12.9 | 13.7 | 16.1 | 15.4 | 15.2 | 11.8 | 14.1 | 11.2 | 20 | 23 |
| Mean temperature | 8.2 | 9.2 | 10 | 9.3 | 9.4 | 11.7 | 9.5 | 10.6 | 10.7 | 12 | 10.6 | 8.6 | 8.2 | 11 | 11.5 | 12.8 | 8.1 | 8 | 9.1 | 11 | 12.5 | 12.9 | 10.8 | 9.7 | 9.1 | 9.9 | 9.3 | 11.4 | 11.9 | 13 |
| Apparent mean temperature | 1.1 | 6 | 3.8 | 4.3 | 5.2 | 6.7 | 3.5 | 4.7 | 3.5 | 8.1 | 3.7 | 0.2 | 0.1 | 4.2 | 5.7 | 8.2 | -0.6 | -1.6 | -0.8 | 3.3 | 7.2 | 9 | 3.9 | 0.7 | 1.5 | 3.3 | -0.6 | 4.1 | 0.8 | 2.3 |
| Minimum temperature | 3.8 | 7.8 | 6.9 | 6.7 | 7.1 | 8.9 | 6.9 | 6.3 | 8.8 | 10.7 | 6 | 3.4 | 2.8 | 8.7 | 6.8 | 10.5 | 2.4 | 2.7 | 4.3 | 5.5 | 10.7 | 10.5 | 6 | 3.1 | 4.2 | 5.6 | 3 | 7.9 | 4 | 4.8 |
| Apparent min temperature | 6.2 | 7.9 | 7.7 | 6.9 | 7.2 | 9.3 | 6.7 | 9.6 | 7.2 | 9.3 | 8.2 | 5.6 | 5.9 | 8 | 9.9 | 10.1 | 5.4 | 4.4 | 4.9 | 7.8 | 9.8 | 11 | 8.9 | 7.9 | 7.2 | 7.4 | 5.7 | 8 | 9.6 | 12 |
| 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) | 11.3 | 11.4 | 11.4 | 11.4 | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 12 | 12 | 12 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 | 12.3 | 12.3 | 12.3 | 12.4 | 12.4 |
| Sunshine duration (h) | 0.1 | 0 | 7.1 | 1.1 | 0 | 10 | 6.7 | 10 | 1 | 0 | 10.7 | 10.7 | 4.4 | 0.2 | 1.7 | 9 | 10.9 | 11 | 8.6 | 7.9 | 6.5 | 0.2 | 10.7 | 11.3 | 9.8 | 11.4 | 11 | 11.4 | 11.4 | 11.5 |
| Precipitation (mm) | 0.3 | 11.9 | 4.7 | 1.2 | 16.1 | 26.9 | 5.1 | 0 | 39.1 | 27.9 | 11.1 | 0 | 0.1 | 10.2 | 0 | 7.3 | 0 | 0 | 0 | 0 | 8.2 | 0.3 | 0 | 0 | 5.7 | 0.4 | 0 | 0.4 | 0 | 0 |
| Precipitation hours | 2 | 23 | 12 | 4 | 15 | 15 | 12 | 0 | 17 | 21 | 16 | 0 | 1 | 14 | 0 | 15 | 0 | 0 | 0 | 0 | 19 | 2 | 0 | 0 | 5 | 1 | 0 | 2 | 0 | 0 |
| Wind speed (m/s) | 11.7 | 8.3 | 15.3 | 12.7 | 28.7 | 25.8 | 18.9 | 6.8 | 36 | 29.7 | 19.3 | 19.2 | 15.5 | 25.7 | 20.2 | 25.5 | 16.1 | 19.7 | 22.4 | 26.7 | 28.5 | 24.1 | 19.9 | 11.8 | 18.2 | 24.5 | 22.5 | 32.6 | 21.9 | 10.5 |
In September 2023, the highest daytime temperature in Chillán was 22.2°C.
While the minimum temperature at night dropped to 2.4°C.
The average nighttime and daytime temperatures during September in Chillán are 6.2°C and 15.2°C respectively.
The precipitation sum in September is about 177 mm.