Average temperature in September is 15 °C
Average daytime temperature is 18.2 °C
Average night temperature is 12 °C
Absolute maximum temperature: 24.8 °C
Absolute minimum temperature: 8.8 °C
Number of sunny days: 11
Number of rainy days: 19
Number of snow days:
Precipitation sum: 141 mm
* Weather data for Langesund Norway 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 | 22 | 20.4 | 17 | 23.1 | 24.8 | 18.9 | 19 | 19.7 | 18.6 | 21.6 | 18.8 | 20.4 | 17.5 | 13.8 | 16.7 | 17.6 | 15.7 | 16.5 | 15.7 | 17.8 | 17 | 17.4 | 16.7 | 16.1 | 16 | 16.4 | 18.1 | 17 | 16.5 | 18.3 |
| Apparent max temperature | 21.3 | 19.9 | 15.8 | 23 | 24.6 | 18.6 | 19 | 21 | 20 | 22.9 | 18.4 | 18.1 | 14.3 | 12.6 | 15.2 | 16.4 | 13 | 15.2 | 14.3 | 16.5 | 15.2 | 16 | 14.4 | 13.5 | 13.6 | 15.5 | 16.4 | 15.5 | 14.4 | 15 |
| Mean temperature | 16.3 | 15.8 | 15.1 | 18.6 | 18.8 | 15.9 | 15.4 | 16.1 | 16 | 17.5 | 17 | 17.1 | 13.5 | 11.4 | 13.9 | 14.4 | 12.5 | 13.9 | 13.9 | 14.7 | 15.7 | 13.8 | 13.1 | 13 | 14.7 | 14.1 | 15.2 | 14.9 | 14.1 | 13.9 |
| Apparent mean temperature | 9.9 | 10.2 | 12.4 | 14.2 | 13 | 11.1 | 11.7 | 13.3 | 14.9 | 14.4 | 15.4 | 9.6 | 6.6 | 5.6 | 7.3 | 9.3 | 6.1 | 9.1 | 9.3 | 9.4 | 13 | 9.9 | 7.4 | 5.9 | 10.7 | 10.3 | 12.5 | 11.8 | 8.6 | 8 |
| Minimum temperature | 11.5 | 11.4 | 13.5 | 15 | 14.2 | 13 | 12.2 | 13.2 | 14.4 | 14.1 | 15.6 | 12.9 | 9.9 | 8.9 | 8.8 | 11.4 | 8.8 | 11.3 | 11.5 | 11.5 | 13.5 | 11.7 | 10.6 | 9 | 12.7 | 11.7 | 12.9 | 13.1 | 11.3 | 11.6 |
| Apparent min temperature | 15.5 | 14.9 | 14.2 | 17.9 | 18 | 14.9 | 15.5 | 17.2 | 17 | 18.2 | 16.8 | 15.6 | 10.5 | 9.5 | 12.8 | 13.3 | 9.9 | 11.9 | 11.3 | 13.1 | 14.3 | 12.8 | 11.1 | 10.2 | 12 | 13.3 | 14.2 | 13.4 | 12.5 | 10.7 |
| 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) | 14.1 | 14 | 13.9 | 13.8 | 13.7 | 13.7 | 13.6 | 13.5 | 13.4 | 13.3 | 13.2 | 13.1 | 13.1 | 13 | 12.9 | 12.8 | 12.7 | 12.6 | 12.5 | 12.5 | 12.4 | 12.3 | 12.2 | 12.1 | 12 | 11.9 | 11.8 | 11.8 | 11.7 | 11.6 |
| Sunshine duration (h) | 12.7 | 12.7 | 1.4 | 12.5 | 12.4 | 7.5 | 8.8 | 6.6 | 1.2 | 10.3 | 0 | 10.2 | 11.6 | 2.4 | 6.2 | 9.5 | 11.4 | 0 | 8.2 | 3 | 0 | 7.6 | 10.7 | 9.1 | 2.2 | 8.6 | 9.5 | 5.4 | 8.6 | 10.2 |
| Precipitation (mm) | 0.5 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.4 | 0 | 0 | 5.2 | 0.9 | 1.9 | 0.5 | 50.5 | 13.4 | 2.6 | 16.9 | 11.2 | 0.6 | 1.2 | 5 | 0.9 | 1.1 | 22.3 | 2.4 | 0 |
| Precipitation hours | 3 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 5 | 4 | 4 | 2 | 24 | 9 | 17 | 23 | 8 | 4 | 3 | 12 | 6 | 4 | 10 | 5 | 0 |
| Wind speed (m/s) | 12 | 11.5 | 14 | 20.3 | 15.3 | 15.1 | 10.8 | 8.4 | 7.3 | 13.1 | 21.5 | 16.4 | 14.8 | 15 | 17.7 | 16.2 | 15.9 | 33.8 | 26.7 | 30.3 | 32 | 18.2 | 14 | 27.8 | 31.4 | 13.7 | 18.9 | 26.9 | 18.6 | 20.7 |
In September 2023, the highest daytime temperature in Langesund was 24.8°C.
While the minimum temperature at night dropped to 8.8°C.
The average nighttime and daytime temperatures during September in Langesund are 12°C and 18.2°C respectively.
The precipitation sum in September is about 141 mm.