Average temperature in August is 17.1 °C
Average daytime temperature is 18.3 °C
Average night temperature is 15.6 °C
Absolute maximum temperature: 22.7 °C
Absolute minimum temperature: 13.8 °C
Number of sunny days: 12
Number of rainy days: 19
Number of snow days:
Precipitation sum: 108 mm
* Weather data for Helsinki Finland is based on climate observations for 2023 year
| August (°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 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 16.9 | 17.3 | 17 | 17.1 | 17.3 | 18.8 | 22.7 | 21.1 | 17.8 | 17.4 | 17.2 | 16.9 | 18.1 | 19.1 | 20 | 19.6 | 19.6 | 17.9 | 17.4 | 17.6 | 18.2 | 17.9 | 18 | 18 | 17.5 | 18.4 | 18.2 | 18 | 18.2 | 18.2 | 18.7 |
| Apparent max temperature | 15.2 | 15.5 | 15.3 | 14.9 | 16.6 | 16.8 | 19.8 | 17.1 | 17 | 15 | 17.5 | 17.1 | 19.1 | 17.8 | 19.9 | 20 | 19.9 | 16.2 | 14.3 | 16.2 | 18.6 | 18 | 18.3 | 18 | 17.7 | 18.9 | 18.9 | 17.4 | 17.9 | 19.4 | 19.8 |
| Mean temperature | 15.4 | 16.6 | 16.3 | 16.6 | 16.5 | 17.4 | 21 | 18.5 | 16.7 | 16.3 | 16.3 | 16.3 | 16.9 | 17.6 | 18.3 | 18.8 | 18.3 | 17 | 16.3 | 16.3 | 17.2 | 16.4 | 16.5 | 16.6 | 16.3 | 17.6 | 17.7 | 16.4 | 17.2 | 17.5 | 17.9 |
| Apparent mean temperature | 11.5 | 14 | 14.4 | 13.3 | 14 | 14.2 | 17.6 | 12.9 | 13 | 13.1 | 14.2 | 15.2 | 14.6 | 15 | 16.9 | 17.4 | 16.2 | 13.6 | 12.9 | 11.1 | 14.8 | 14.2 | 14.1 | 14.7 | 14.9 | 14.3 | 15.1 | 10.3 | 12.5 | 14 | 14.2 |
| Minimum temperature | 13.9 | 15.9 | 15.6 | 16.2 | 15.5 | 14.5 | 18.9 | 16.6 | 15.7 | 15.2 | 15.3 | 14.9 | 14.7 | 15.6 | 16.7 | 18.1 | 16.5 | 15.3 | 15.3 | 13.8 | 15.5 | 14.9 | 15 | 14.6 | 14.3 | 16 | 16.2 | 14.7 | 15.7 | 16.1 | 16.8 |
| Apparent min temperature | 13.8 | 14.8 | 14.9 | 14.2 | 15.3 | 15.6 | 18.6 | 14.3 | 14.8 | 14.1 | 15.7 | 16 | 17.1 | 16.6 | 18.1 | 18.7 | 18.1 | 15 | 13.9 | 14.4 | 16.8 | 16 | 16.1 | 16.5 | 16.8 | 15.8 | 17 | 13.9 | 15.3 | 16.8 | 16.9 |
| August | 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 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 16.9 | 16.8 | 16.7 | 16.6 | 16.6 | 16.5 | 16.4 | 16.3 | 16.2 | 16.1 | 16.1 | 16 | 15.9 | 15.8 | 15.7 | 15.6 | 15.5 | 15.4 | 15.3 | 15.3 | 15.2 | 15.1 | 15 | 14.9 | 14.8 | 14.7 | 14.6 | 14.6 | 14.5 | 14.4 | 14.3 |
| Sunshine duration (h) | 2.3 | 2 | 4.1 | 13.2 | 14.9 | 9.6 | 14.8 | 11.9 | 14.7 | 8.5 | 14.5 | 14.4 | 12.7 | 14.3 | 14.1 | 10.9 | 13.8 | 11.8 | 0 | 13.7 | 6.8 | 10 | 11.4 | 8.8 | 10.2 | 13.1 | 5.9 | 1.9 | 12.1 | 0.6 | 1.9 |
| Precipitation (mm) | 9 | 7.4 | 9.8 | 1.4 | 0 | 0 | 0 | 0.2 | 0 | 1 | 0.2 | 0 | 0 | 0 | 0 | 7.3 | 0.1 | 0 | 3.7 | 0 | 1.2 | 0.9 | 6.3 | 1.3 | 0 | 0.7 | 2.4 | 26 | 0 | 10.3 | 18.7 |
| Precipitation hours | 17 | 18 | 11 | 6 | 0 | 0 | 0 | 2 | 0 | 6 | 1 | 0 | 0 | 0 | 0 | 8 | 1 | 0 | 9 | 0 | 7 | 5 | 9 | 7 | 0 | 4 | 7 | 10 | 0 | 13 | 13 |
| Wind speed (m/s) | 25.8 | 30.9 | 29.5 | 35 | 28.5 | 33.4 | 41.6 | 45.9 | 26 | 24.2 | 20.3 | 17.3 | 16.5 | 28 | 24.3 | 27.6 | 22.2 | 28.5 | 34.7 | 24.1 | 19.3 | 22.9 | 17.1 | 19.2 | 9.9 | 32.9 | 31.7 | 58.9 | 27.9 | 34.9 | 35.7 |
In August 2023, the highest daytime temperature in Helsinki was 22.7°C.
While the minimum temperature at night dropped to 13.8°C.
The average nighttime and daytime temperatures during August in Helsinki are 15.6°C and 18.3°C respectively.
The precipitation sum in August is about 108 mm.