Last updated: March 2, 2024
The weather in Helsinki, Finland, during August is characterized by an average temperature of 17°C (62°F). Highs can soar to 25°C (78°F), while lows may dip to 8°C (46°F). Typically, the humidity level in Helsinki throughout August hovers around 83%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In August, Helsinki averages 83 mm (3.3 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 15 hours 31 minutes of daylight, with the sun shining for approximately 13 hours 4 minutes each day. Additionally, there is a 29% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In August, the UV Index in Helsinki reaches a maximum of 5, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 30 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 2 | 3 | 4 | 5 | 5 | 5 | 5 | 4 | 3 | 2 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||