Average temperature in September is 25 °C
Average daytime temperature is 30.4 °C
Average night temperature is 21.8 °C
Absolute maximum temperature: 31.9 °C
Absolute minimum temperature: 20.5 °C
Number of sunny days:
Number of rainy days: 30
Number of snow days:
Precipitation sum: 178 mm
* Weather data for San Luis Guatemala 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 | 30.2 | 30.6 | 30.6 | 30.4 | 31.6 | 31.9 | 31.6 | 31.1 | 30 | 29.6 | 27.9 | 29.7 | 29.4 | 31 | 30.6 | 29.5 | 31.8 | 30.2 | 29.1 | 30.9 | 29.7 | 29.7 | 31.9 | 31.6 | 31.2 | 31 | 31.3 | 30 | 29.2 | 27.2 |
| Apparent max temperature | 36.7 | 36.3 | 36.5 | 35.8 | 37.1 | 37.8 | 36.8 | 36.3 | 34.7 | 35.3 | 32.3 | 34.9 | 35.3 | 35.3 | 36.3 | 34.4 | 36.8 | 35.8 | 34.9 | 36.1 | 35.3 | 35.6 | 38 | 36.3 | 37.2 | 37 | 37 | 36.1 | 35.9 | 32.3 |
| Mean temperature | 25.4 | 25.2 | 25.1 | 24.7 | 25.7 | 26.5 | 26 | 25.4 | 24.4 | 24.7 | 24 | 24.7 | 24.6 | 25.6 | 25.5 | 25.3 | 25.7 | 24.9 | 24.8 | 25.6 | 25 | 25.3 | 25.9 | 25.2 | 24.3 | 24.7 | 24.5 | 24.1 | 24.6 | 23.9 |
| Apparent mean temperature | 26.3 | 26.1 | 26.5 | 25 | 25.8 | 27.9 | 27.6 | 26 | 24.2 | 25.1 | 24.8 | 25.4 | 26.1 | 26.2 | 25.5 | 26.7 | 26.1 | 24.1 | 24.9 | 26.2 | 26.2 | 26.2 | 24.9 | 25.3 | 23.9 | 25.2 | 24.5 | 25.1 | 25.6 | 26 |
| Minimum temperature | 22 | 21.9 | 22 | 21.3 | 22.2 | 22.9 | 23 | 22 | 20.5 | 21.4 | 21.3 | 21.7 | 21.7 | 22 | 21.7 | 22.3 | 21.7 | 21.6 | 21.3 | 22.3 | 22.3 | 22.1 | 21.4 | 21.5 | 20.8 | 21.7 | 21.3 | 21.5 | 21.5 | 21.8 |
| Apparent min temperature | 30.4 | 29.6 | 29.8 | 29.1 | 29.9 | 31.3 | 30.6 | 30.2 | 28.6 | 29.2 | 27.9 | 28.9 | 29.4 | 30 | 29.8 | 29.9 | 30.4 | 28.9 | 29 | 29.8 | 29.4 | 29.6 | 30.2 | 29.6 | 28.4 | 28.8 | 28.9 | 28.5 | 29.3 | 28.7 |
| 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) | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12 | 12 | 12 |
| Sunshine duration (h) | 10.9 | 10.4 | 10.2 | 10.7 | 10.9 | 11.2 | 10.8 | 10.9 | 7.9 | 8.1 | 9.5 | 10.6 | 7.8 | 10.6 | 11.4 | 10.9 | 11.5 | 10.5 | 11.2 | 11.3 | 8.1 | 10.3 | 11.1 | 11.1 | 11.1 | 10.1 | 10.2 | 10.3 | 7.2 | 1.8 |
| Precipitation (mm) | 6.6 | 1.5 | 2.3 | 5.8 | 1.2 | 0.2 | 2.3 | 6.5 | 2.2 | 2.4 | 4.7 | 2.3 | 6.6 | 1.6 | 2.3 | 1.6 | 1.8 | 8.5 | 2.9 | 2.6 | 9.4 | 2.8 | 1.1 | 3.9 | 39.8 | 4.3 | 10.4 | 20.8 | 8.3 | 11.4 |
| Precipitation hours | 10 | 3 | 8 | 7 | 6 | 2 | 9 | 10 | 9 | 12 | 12 | 11 | 17 | 4 | 9 | 6 | 5 | 12 | 11 | 9 | 11 | 10 | 4 | 4 | 13 | 11 | 9 | 14 | 15 | 14 |
| Wind speed (m/s) | 12.7 | 14.2 | 10.2 | 8.9 | 11.9 | 12.3 | 12.2 | 10.5 | 10.6 | 8.3 | 13.1 | 9.7 | 8 | 11.6 | 12.3 | 10 | 8.4 | 12.8 | 10.3 | 12.8 | 11.2 | 12.3 | 9.3 | 9.8 | 12.2 | 12.4 | 10.3 | 14.2 | 10.2 | 9.8 |
In September 2023, the highest daytime temperature in San Luis was 31.9°C.
While the minimum temperature at night dropped to 20.5°C.
The average nighttime and daytime temperatures during September in San Luis are 21.8°C and 30.4°C respectively.
The precipitation sum in September is about 178 mm.