Last updated: August 23, 2025
In December, the average temperature in Lappi, Finland hovers around 0°C (32°F), with a potential minimum plunge to -18°C (0°F) and a maximum reaching 7°C (44°F). Expect 70 mm (2.7 in) of precipitation spread over 14 days, contributing to an average humidity level of 89%. Prepare for a chilly, damp environment!
In December in Lappi, the average temperature is 0°C (32°F), with maximums reaching 7°C (44°F) and minimums dropping as low as -18°C (0°F). Travelers should be prepared for cold and potentially harsh weather conditions during this time.
In Lappi in December, the precipitation amount is 70 mm (2.7 in) over the course of 14 days.
In Lappi in December humidity is 89%. With an average temperature of 0°C (32°F), this humidity feels like a chilly embrace that makes every breath feel heavy and damp, turning your travel experience into a constant dance with the cold and moisture in the air, leaving you longing for warmth and comfort at every turn.
In Lappi 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 Lappi.
UV Risk Categories
Weather in Lappi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Lappi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 43 mm (1.7 inches) | 92% | low |
| February Weather | -3°C (27°F) | 39 mm (1.5 inches) | 90% | low |
| March Weather | 0°C (32°F) | 42 mm (1.6 inches) | 89% | moderate |
| April Weather | 4°C (40°F) | 33 mm (1.3 inches) | 85% | moderate |
| May Weather | 9°C (49°F) | 42 mm (1.6 inches) | 77% | moderate |
| June Weather | 16°C (60°F) | 47 mm (1.8 inches) | 78% | high |
| July Weather | 17°C (64°F) | 87 mm (3.4 inches) | 78% | high |
| August Weather | 16°C (62°F) | 86 mm (3.4 inches) | 79% | moderate |
| September Weather | 12°C (54°F) | 68 mm (2.7 inches) | 86% | moderate |
| October Weather | 7°C (45°F) | 80 mm (3.2 inches) | 90% | low |
| November Weather | 4°C (39°F) | 55 mm (2.2 inches) | 91% | low |
| December Weather | 0°C (32°F) | 70 mm (2.7 inches) | 89% | low |