Average temperature in September is 15.3 °C
Average daytime temperature is 16.9 °C
Average night temperature is 13.3 °C
Absolute maximum temperature: 21.1 °C
Absolute minimum temperature: 8 °C
Number of sunny days: 12
Number of rainy days: 18
Number of snow days:
Precipitation sum: 46 mm
* Weather data for Mariehamn Åland is based on climate observations for 2023 year
Settembre (°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 | 16.9 | 17.2 | 16.1 | 18.4 | 21.1 | 16.3 | 17.3 | 20.6 | 18.2 | 18.4 | 18.1 | 17.4 | 16.8 | 15 | 16.4 | 16.9 | 15.5 | 15 | 17.6 | 16.9 | 18.2 | 18.1 | 15.7 | 15.8 | 14.9 | 15.6 | 16.6 | 15.7 | 15.5 | 15.5 |
Apparent max temperature | 16.9 | 16.6 | 15 | 17.6 | 19.3 | 14.2 | 15.4 | 21.4 | 17.5 | 18.2 | 19.2 | 16.8 | 16.2 | 11.9 | 13.3 | 13.6 | 13.3 | 12.2 | 14.6 | 14.1 | 15.8 | 15.1 | 14.2 | 13.3 | 10.8 | 13.8 | 15.4 | 14.3 | 14.3 | 13.9 |
Mean temperature | 15.5 | 14.7 | 14.7 | 16.8 | 16.9 | 14.3 | 15.8 | 17.3 | 16.9 | 17.2 | 16.2 | 16.6 | 14.9 | 12.9 | 14.1 | 15.8 | 12.8 | 13.1 | 16.2 | 15.3 | 17.1 | 17.3 | 14.8 | 14.1 | 14.1 | 14.6 | 15.4 | 14.3 | 14.8 | 13.9 |
Apparent mean temperature | 13.4 | 10.6 | 12.1 | 12.6 | 12.3 | 9.9 | 12.6 | 14 | 14.1 | 15.4 | 13.9 | 14.7 | 9.1 | 8.4 | 5.9 | 11.9 | 7.1 | 6.5 | 8.3 | 8 | 13.1 | 13.4 | 11.7 | 9.8 | 9 | 10.7 | 12.5 | 11 | 11.9 | 8.4 |
Minimum temperature | 14.7 | 11.6 | 13.3 | 14.8 | 14.4 | 11.8 | 14.3 | 14.8 | 16.1 | 15.4 | 14.3 | 16.1 | 13.1 | 9.7 | 8 | 15.2 | 8.9 | 8.4 | 14.3 | 13.5 | 16 | 15.6 | 14 | 12.6 | 12.2 | 14.1 | 14.2 | 11.5 | 14.3 | 12.3 |
Apparent min temperature | 14.9 | 14 | 13.5 | 15.1 | 15.1 | 12.2 | 13.9 | 17.3 | 15.8 | 16.9 | 16.4 | 15.4 | 12.9 | 10.2 | 11.4 | 12.7 | 9.9 | 9.9 | 12.2 | 11.6 | 14.1 | 14.2 | 12.8 | 11.2 | 10.1 | 12.3 | 13.9 | 13.2 | 13.1 | 10.4 |
Settembre | 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) | 14.2 | 14.1 | 14 | 13.9 | 13.8 | 13.7 | 13.6 | 13.6 | 13.5 | 13.4 | 13.3 | 13.2 | 13.1 | 13 | 12.9 | 12.8 | 12.7 | 12.7 | 12.6 | 12.5 | 12.4 | 12.3 | 12.2 | 12.1 | 12 | 11.9 | 11.8 | 11.8 | 11.7 | 11.6 |
Sunshine duration (h) | 6 | 11.9 | 11.4 | 12.5 | 10.9 | 12.2 | 11.3 | 12.2 | 9.8 | 9.5 | 7.1 | 2.8 | 6.1 | 10.1 | 8.5 | 10.5 | 9.6 | 9.9 | 5 | 8 | 10.6 | 9 | 5.1 | 10.8 | 6.7 | 8.2 | 6.5 | 5.7 | 0.5 | 9.3 |
Precipitation (mm) | 6.1 | 0.8 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0 | 0 | 0.2 | 0.6 | 0.3 | 2 | 1.2 | 0.9 | 0 | 11.9 | 3.8 | 0 | 3 | 1.1 | 0.6 | 0 | 0 | 0 | 8.9 | 0.1 | 3.9 |
Precipitation hours | 11 | 5 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 2 | 3 | 7 | 3 | 3 | 0 | 10 | 3 | 0 | 6 | 3 | 2 | 0 | 0 | 0 | 4 | 1 | 5 |
Wind speed (m/s) | 20.8 | 17.1 | 16.5 | 28.1 | 25.4 | 18.9 | 27.2 | 17.9 | 25.4 | 20.5 | 23 | 27.6 | 23 | 24.4 | 29.3 | 32.7 | 25.6 | 28.5 | 40.1 | 49.1 | 33.9 | 37.2 | 23.3 | 26.4 | 40.8 | 30 | 26.1 | 26.6 | 26.6 | 32.2 |
In September 2023, the highest daytime temperature in Mariehamn was 21.1°C.
While the minimum temperature at night dropped to 8°C.
The average nighttime and daytime temperatures during September in Mariehamn are 13.3°C and 16.9°C respectively.
The precipitation sum in September is about 46 mm.