Last updated: August 23, 2025
In December, the average temperature in Simpele, Finland hovers around -4°C (26°F), with minimums plummeting to -23°C (-9°F) and maximums reaching up to 5°C (41°F). Expect 73 mm (2.9 in) of precipitation over approximately 16 days, contributing to a notable average humidity of 95%. Stay warm and prepared for the wet conditions!
In December in Simpele, the average temperature is -4°C (26°F), with maximums reaching 5°C (41°F) and minimums dropping as low as -23°C (-9°F). Travelers should be prepared for very cold conditions and pack accordingly.
In Simpele in December, the precipitation amount is 73 mm (2.9 in) spread over 16 days.
In Simpele in December humidity is 95%. With average temperature -4°C (26°F), this humidity feels like a chilling fog that wraps around you, making even the simplest outdoor activities feel arduous and uncomfortable for traveling.
In Simpele 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 Simpele.
UV Risk Categories
Weather in Simpele varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Simpele, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 45 mm (1.8 inches) | 98% | low |
| February Weather | -6°C (22°F) | 51 mm (2.0 inches) | 96% | low |
| March Weather | -2°C (28°F) | 47 mm (1.8 inches) | 93% | moderate |
| April Weather | 3°C (37°F) | 48 mm (1.9 inches) | 88% | moderate |
| May Weather | 10°C (50°F) | 56 mm (2.2 inches) | 77% | moderate |
| June Weather | 16°C (61°F) | 59 mm (2.3 inches) | 75% | high |
| July Weather | 17°C (64°F) | 80 mm (3.1 inches) | 82% | high |
| August Weather | 16°C (61°F) | 87 mm (3.4 inches) | 84% | moderate |
| September Weather | 11°C (51°F) | 74 mm (2.9 inches) | 90% | moderate |
| October Weather | 5°C (42°F) | 72 mm (2.9 inches) | 93% | low |
| November Weather | 1°C (34°F) | 48 mm (1.9 inches) | 93% | low |
| December Weather | -4°C (26°F) | 73 mm (2.9 inches) | 95% | low |