Average temperature in September is 12.4 °C
Average daytime temperature is 16.2 °C
Average night temperature is 8.5 °C
Absolute maximum temperature: 23.1 °C
Absolute minimum temperature: 3.2 °C
Number of sunny days: 2
Number of rainy days: 28
Number of snow days:
Precipitation sum: 219 mm
* Weather data for Straumen 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 | 16.3 | 16.2 | 15.5 | 15.5 | 13.5 | 16.5 | 20.1 | 20.8 | 23.1 | 16.1 | 22.1 | 14.3 | 10.3 | 15.1 | 17.6 | 12.7 | 12.9 | 16.3 | 19.4 | 13.9 | 19.6 | 14.1 | 16.6 | 12.7 | 18.4 | 19.4 | 15.5 | 15.8 | 14 | 12.3 |
| Apparent max temperature | 15.2 | 14.5 | 15.2 | 15.5 | 10.8 | 15.6 | 20 | 22.4 | 25.8 | 15.9 | 23.3 | 12.7 | 8.5 | 12 | 17 | 10.1 | 10.7 | 14.3 | 17.9 | 13.1 | 18.3 | 14.5 | 15.8 | 10.9 | 16.9 | 20 | 14.7 | 14.3 | 13.7 | 11.1 |
| Mean temperature | 13.1 | 12.6 | 13.1 | 13.6 | 11.7 | 12.1 | 13.9 | 15.4 | 17.7 | 14.3 | 15.9 | 12.4 | 8.6 | 9.1 | 11.6 | 10.3 | 9.1 | 11.9 | 13.3 | 11.1 | 13.6 | 11.9 | 10.9 | 10.5 | 12.9 | 14 | 12.1 | 12.5 | 11.3 | 10.5 |
| Apparent mean temperature | 8.7 | 8.5 | 6.4 | 10.2 | 7.8 | 6.6 | 5.3 | 9.5 | 12.4 | 12 | 10.7 | 7.2 | 2 | 0.5 | 4.5 | 5.6 | 3.6 | 3.6 | 5.5 | 5.2 | 8.7 | 6.4 | 6.1 | 4.2 | 7.2 | 8.9 | 8 | 6.9 | 6.6 | 6.9 |
| Minimum temperature | 9.7 | 9.6 | 8.1 | 11.7 | 9.6 | 7.8 | 6.8 | 10.3 | 12.2 | 12.5 | 11.3 | 9.8 | 4.2 | 3.2 | 6.5 | 7.4 | 5.2 | 6.5 | 9.3 | 9.5 | 10.6 | 7.5 | 7.4 | 6.7 | 9 | 9.7 | 9.1 | 9.3 | 8 | 7.9 |
| Apparent min temperature | 12.3 | 11.6 | 12.3 | 12.2 | 9.4 | 10.8 | 13.5 | 15.9 | 19.2 | 14 | 15.8 | 10.7 | 5.9 | 6.5 | 10.4 | 8.3 | 7.1 | 9.2 | 10.8 | 8.3 | 13 | 11.6 | 9.8 | 7.6 | 11.7 | 13.4 | 10.8 | 10.8 | 10.8 | 9.3 |
| 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) | 14.6 | 14.5 | 14.4 | 14.2 | 14.1 | 14 | 13.9 | 13.8 | 13.7 | 13.6 | 13.5 | 13.4 | 13.3 | 13.2 | 13.1 | 13 | 12.9 | 12.8 | 12.7 | 12.6 | 12.4 | 12.3 | 12.2 | 12.1 | 12 | 11.9 | 11.8 | 11.7 | 11.6 | 11.5 |
| Sunshine duration (h) | 11.5 | 11.4 | 0 | 2 | 11.7 | 12 | 11.7 | 7 | 12.1 | 4.6 | 3.1 | 10 | 3.8 | 8.8 | 11.5 | 8.1 | 10.5 | 7.6 | 5 | 1.7 | 1.1 | 0 | 8.3 | 10.4 | 4.1 | 10.1 | 0 | 3.5 | 0.9 | 3.3 |
| Precipitation (mm) | 2.1 | 0.6 | 8.5 | 21.1 | 5.1 | 0.5 | 0 | 0.1 | 0.1 | 7.2 | 10.2 | 2.1 | 8.9 | 0 | 0.9 | 5.9 | 0.1 | 0.9 | 23.7 | 15.5 | 8.2 | 15.8 | 3.1 | 1.2 | 21.2 | 6.6 | 12.7 | 4.6 | 16.1 | 16 |
| Precipitation hours | 12 | 4 | 17 | 22 | 18 | 5 | 0 | 1 | 1 | 10 | 13 | 13 | 19 | 0 | 1 | 14 | 1 | 2 | 14 | 15 | 17 | 17 | 3 | 8 | 16 | 5 | 11 | 5 | 13 | 17 |
| Wind speed (m/s) | 7.9 | 7.6 | 18.7 | 24.3 | 20.9 | 12.7 | 5.3 | 6.2 | 6.1 | 11.8 | 16.7 | 19.3 | 27.1 | 11.8 | 7 | 20.1 | 10.7 | 20.8 | 32.4 | 26.5 | 20.5 | 7.4 | 9.9 | 23.6 | 18.7 | 12.4 | 16.7 | 18.8 | 7.7 | 14 |
In September 2023, the highest daytime temperature in Straumen was 23.1°C.
While the minimum temperature at night dropped to 3.2°C.
The average nighttime and daytime temperatures during September in Straumen are 8.5°C and 16.2°C respectively.
The precipitation sum in September is about 219 mm.