Last updated: August 23, 2025
In December, the average temperature in Pertunmaa, Finland hovers around -3°C (27°F). Expect chilly conditions with a minimum plummeting to -20°C (-4°F), while the maximum may reach up to 5°C (41°F). Precipitation is noteworthy, with approximately 69 mm (2.7 in) observed over 15 days, contributing to a notably high average humidity of 96%. Stay warm and prepared for a damp, cold month ahead!
In December in Pertunmaa, the average temperature is -3°C (27°F). The maximum can reach 5°C (41°F), while the minimum can plummet to as low as -20°C (-4°F). It's essential to pack warm clothing and be prepared for cold weather conditions if you're planning to travel during this time.
In Pertunmaa in December, the precipitation amount is 69 mm (2.7 in) over the course of 15 days.
In Pertunmaa in December humidity is 96%. With an average temperature of -3°C (27°F), this humidity feels like a biting cold that penetrates your clothes, making travel uncomfortable as the dampness clings to your skin and leaves you feeling chilled to the bone.
In Pertunmaa in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Pertunmaa.
UV Risk Categories
Weather in Pertunmaa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Pertunmaa, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (24°F) | 47 mm (1.8 inches) | 98% | low |
| February Weather | -5°C (22°F) | 45 mm (1.8 inches) | 96% | low |
| March Weather | -2°C (28°F) | 44 mm (1.7 inches) | 93% | moderate |
| April Weather | 3°C (37°F) | 46 mm (1.8 inches) | 87% | moderate |
| May Weather | 9°C (49°F) | 56 mm (2.2 inches) | 75% | moderate |
| June Weather | 16°C (61°F) | 66 mm (2.6 inches) | 74% | high |
| July Weather | 17°C (64°F) | 82 mm (3.2 inches) | 80% | high |
| August Weather | 16°C (61°F) | 94 mm (3.7 inches) | 85% | moderate |
| September Weather | 11°C (52°F) | 67 mm (2.7 inches) | 90% | moderate |
| October Weather | 6°C (43°F) | 77 mm (3.0 inches) | 94% | low |
| November Weather | 2°C (35°F) | 54 mm (2.1 inches) | 94% | low |
| December Weather | -3°C (27°F) | 69 mm (2.7 inches) | 96% | low |