Average temperature in September is 22.8 °C
Average daytime temperature is 26.6 °C
Average night temperature is 19.8 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: 14.1 °C
Number of sunny days: 9
Number of rainy days: 21
Number of snow days:
Precipitation sum: 60 mm
* Weather data for Santos Brazil 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 | 23 | 25.2 | 30.6 | 32.1 | 27.6 | 21.4 | 23.7 | 25.8 | 29.6 | 24.4 | 24.9 | 30.9 | 28.6 | 27.3 | 20.9 | 22 | 27.6 | 36.3 | 28.1 | 25.2 | 25.1 | 26.4 | 25.5 | 31 | 24.9 | 26.4 | 32.3 | 22.4 | 23.7 | 25.7 |
| Apparent max temperature | 25.9 | 28 | 39.1 | 42.9 | 31.7 | 22.4 | 24.5 | 29.2 | 35.6 | 28 | 29.5 | 36.3 | 32.1 | 27.8 | 21 | 24.2 | 33.6 | 39.7 | 33.2 | 30.1 | 29.1 | 31.3 | 30.7 | 39.8 | 29.3 | 31.6 | 33.7 | 24.5 | 24.4 | 29.7 |
| Mean temperature | 18.9 | 21 | 25 | 26.9 | 23.7 | 20.4 | 21.1 | 21.3 | 22.9 | 22.4 | 22.8 | 24.3 | 24.2 | 22 | 18.9 | 19.5 | 23.2 | 25.9 | 24.6 | 22.8 | 23.1 | 23.1 | 23.3 | 25.2 | 23.6 | 24.1 | 25.4 | 21 | 21.8 | 22.2 |
| Apparent mean temperature | 14.2 | 19.5 | 23.3 | 26 | 21 | 19.9 | 19.9 | 19.2 | 21.5 | 22.7 | 24.5 | 21.1 | 20.1 | 17.4 | 17.2 | 16.5 | 21.3 | 22.7 | 23.7 | 23.1 | 25 | 23.2 | 25.1 | 24.9 | 25.6 | 25.9 | 24.6 | 19.2 | 20.7 | 21.6 |
| Minimum temperature | 14.1 | 17.5 | 20.9 | 22.9 | 19.9 | 19.5 | 19.1 | 17.6 | 19.5 | 20.3 | 21.1 | 19.8 | 19.4 | 17.4 | 16.5 | 16.1 | 19.1 | 20.5 | 21 | 20.5 | 21.5 | 19.7 | 21.3 | 21 | 22.7 | 22.1 | 22.5 | 19.7 | 20.3 | 19.1 |
| Apparent min temperature | 20.2 | 23.4 | 29.3 | 32.4 | 25.9 | 21.1 | 21.8 | 23.8 | 26 | 25.6 | 26.7 | 27.7 | 27.1 | 23.1 | 19.4 | 21.3 | 27 | 29.7 | 28.4 | 26.2 | 26.8 | 27.3 | 27.4 | 30.5 | 27.3 | 28.2 | 29.3 | 21.1 | 22.3 | 24.8 |
| 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) | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 12 | 12 | 12 | 12 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 | 12.2 | 12.2 | 12.3 | 12.3 |
| Sunshine duration (h) | 10.7 | 9.8 | 10.2 | 10.4 | 2.2 | 0 | 10.2 | 10.8 | 7.8 | 8.1 | 10.9 | 11.1 | 11.2 | 0.1 | 3.9 | 11.2 | 11.3 | 11.1 | 11.2 | 10.3 | 10.4 | 10.6 | 8.4 | 11.2 | 0.2 | 10.4 | 8.3 | 1.3 | 6.9 | 11 |
| Precipitation (mm) | 0 | 0.2 | 4.9 | 0 | 2.2 | 18.8 | 0.2 | 0 | 0.4 | 1.1 | 1.5 | 0 | 0 | 8.6 | 0.9 | 0 | 0 | 0.1 | 0 | 0.3 | 1.8 | 0.1 | 0.2 | 0 | 5.2 | 1.6 | 2.8 | 9.1 | 0.3 | 0.1 |
| Precipitation hours | 0 | 1 | 5 | 0 | 8 | 24 | 2 | 0 | 1 | 7 | 5 | 0 | 0 | 11 | 6 | 0 | 0 | 1 | 0 | 3 | 14 | 1 | 2 | 0 | 19 | 4 | 6 | 18 | 3 | 1 |
| Wind speed (m/s) | 6.8 | 13.7 | 15.3 | 11.5 | 29.3 | 20.1 | 19.6 | 16.1 | 18.9 | 9.8 | 9.8 | 13.6 | 15.4 | 25 | 13.2 | 11.5 | 12.4 | 14.8 | 10.4 | 10.7 | 9.5 | 12.4 | 8.1 | 12.2 | 12.8 | 10 | 24.2 | 24.1 | 20.1 | 17.5 |
In September 2023, the highest daytime temperature in Santos was 36.3°C.
While the minimum temperature at night dropped to 14.1°C.
The average nighttime and daytime temperatures during September in Santos are 19.8°C and 26.6°C respectively.
The precipitation sum in September is about 60 mm.