Average temperature in September is 25 °C
Average daytime temperature is 31 °C
Average night temperature is 20.6 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: 18.8 °C
Number of sunny days: 1
Number of rainy days: 29
Number of snow days:
Precipitation sum: 102 mm
* Weather data for San Fernando Nicaragua 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 | 28.5 | 29.6 | 30.6 | 29.5 | 29.4 | 30 | 30.5 | 31 | 31.2 | 31.4 | 30 | 32.2 | 32.3 | 31.5 | 32.1 | 32.2 | 32.9 | 32.7 | 32.7 | 32.1 | 29.9 | 32.4 | 32.5 | 32.3 | 30.5 | 30.3 | 31.1 | 29.8 | 29.8 | 29.6 |
| Apparent max temperature | 29.9 | 32.4 | 34.1 | 32.9 | 32.6 | 32.6 | 32.9 | 31.8 | 33.1 | 33.3 | 31.5 | 34.9 | 35.1 | 33.6 | 33.9 | 33.6 | 34.4 | 32.4 | 33.5 | 34.1 | 30.9 | 33.8 | 34.2 | 34.5 | 33.7 | 33.6 | 35.1 | 34 | 33.7 | 33.1 |
| Mean temperature | 24.5 | 24.7 | 24.4 | 23.7 | 23.5 | 24.2 | 25.6 | 25.1 | 25.4 | 25.4 | 24.9 | 25 | 25.4 | 25.5 | 26.1 | 25.8 | 25.9 | 26 | 26.2 | 25.1 | 23.9 | 25.7 | 26.1 | 25.1 | 24.1 | 24 | 24.5 | 24.4 | 24.6 | 24.7 |
| Apparent mean temperature | 24.3 | 24.7 | 21 | 22.2 | 22.2 | 22.4 | 24.4 | 21.7 | 23.2 | 23.4 | 22.8 | 23.4 | 24.1 | 24.2 | 24.6 | 23 | 24.1 | 23.7 | 22.6 | 23.9 | 23.9 | 23.7 | 24.7 | 22 | 22.5 | 22.6 | 24.3 | 24.6 | 24.5 | 23.9 |
| Minimum temperature | 21 | 21.9 | 18.8 | 19.5 | 19.5 | 19.6 | 21.9 | 19.1 | 20.7 | 20.2 | 20.4 | 20.3 | 20.7 | 20.9 | 21.4 | 19.9 | 21.9 | 20.8 | 20.9 | 20.9 | 21 | 21.5 | 21.7 | 19.5 | 20 | 19.6 | 20.7 | 21.4 | 21 | 20.7 |
| Apparent min temperature | 26.9 | 27.1 | 26.9 | 26.6 | 26.3 | 26.8 | 27.5 | 26.7 | 27 | 27.4 | 26.5 | 27.5 | 28.2 | 28 | 28.1 | 27.7 | 27.6 | 27.1 | 27 | 27.2 | 26.1 | 27.3 | 28.3 | 27.3 | 27.1 | 27.2 | 28.1 | 27.9 | 27.9 | 27.7 |
| 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 | 12.3 | 12.3 | 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 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12 | 12 | 12 |
| Sunshine duration (h) | 10.1 | 10 | 11.6 | 11 | 10.7 | 11.5 | 11.5 | 11.5 | 11.4 | 11.4 | 11.5 | 11.2 | 11.1 | 11 | 11.3 | 11.2 | 11.3 | 11.2 | 11.4 | 9.9 | 6.2 | 10.6 | 11 | 8.4 | 11 | 10.1 | 9.3 | 10.8 | 10.4 | 11 |
| Precipitation (mm) | 5.2 | 0.8 | 6.8 | 5.2 | 1.6 | 1.1 | 0.1 | 0 | 0.2 | 0.3 | 3.1 | 2.4 | 6.6 | 2.4 | 0.8 | 1.5 | 1 | 0.1 | 0.4 | 8.1 | 3.8 | 1 | 0.8 | 8.9 | 4.9 | 2.5 | 9.9 | 11.6 | 10 | 1.4 |
| Precipitation hours | 8 | 3 | 2 | 7 | 9 | 7 | 1 | 0 | 2 | 3 | 8 | 6 | 4 | 9 | 4 | 3 | 2 | 1 | 1 | 6 | 11 | 1 | 4 | 5 | 6 | 5 | 4 | 13 | 8 | 6 |
| Wind speed (m/s) | 21.7 | 19.6 | 17.9 | 20.5 | 18.8 | 18.7 | 19 | 18.7 | 17.3 | 19.4 | 21.1 | 20.6 | 16.6 | 17 | 17.6 | 21.4 | 19.4 | 21.4 | 20.3 | 17 | 18 | 19.5 | 16.1 | 14.9 | 15.1 | 18.2 | 12.7 | 17.3 | 17.3 | 15.9 |
In September 2023, the highest daytime temperature in San Fernando was 32.9°C.
While the minimum temperature at night dropped to 18.8°C.
The average nighttime and daytime temperatures during September in San Fernando are 20.6°C and 31°C respectively.
The precipitation sum in September is about 102 mm.