Porvoo Climate: Weather by Month and Best Time to Visit
Best months for Porvoo: July, August, June.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -2°C | -7°C | 45 mm | 10 | – | – | 3.7 |
| February | -2°C | -8°C | 39 mm | 9 | – | – | 3.9 |
| March | 2°C | -6°C | 36 mm | 8 | – | – | 4.3 |
| April | 9°C | 0°C | 36 mm | 9 | – | – | 5.6 |
| May | 15°C | 5°C | 45 mm | 9 | – | – | 6.8 |
| June | 19°C | 10°C | 71 mm | 12 | – | – | 7.1 |
| July | 22°C | 13°C | 67 mm | 11 | – | – | 7.6 |
| August | 21°C | 11°C | 65 mm | 12 | – | – | 7.3 |
| September | 15°C | 7°C | 51 mm | 10 | – | – | 6.7 |
| October | 8°C | 3°C | 55 mm | 11 | – | – | 5.4 |
| November | 3°C | -1°C | 54 mm | 11 | – | – | 4.4 |
| December | 0°C | -4°C | 53 mm | 12 | – | – | 3.5 |