Last updated: March 2, 2024
The weather in Porvoo, Finland, during May is characterized by an average temperature of 11°C (51°F). Highs can soar to 25°C (77°F), while lows may dip to -2°C (28°F). Typically, the humidity level in Porvoo throughout May hovers around 75%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Porvoo averages 50 mm (2.0 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 17 hours 17 minutes of daylight, with the sun shining for approximately 14 hours 32 minutes each day. Additionally, there is a 29% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in Porvoo 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 | 2 | 2 | 3 | 4 | 5 | 5 | 5 | 4 | 3 | 3 | 2 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||