Last updated: August 23, 2025
In December, the average temperature in Lemi, Finland hovers around -3°C (28°F), making it a chilly time of year. Minimum temperatures can plummet to -21°C (-5°F), while the maximum can reach a brisk 5°C (42°F). Expect precipitation totaling 72 mm (2.8 in) over approximately 15 days, accompanied by a high average humidity of 95%, creating a cold and damp atmosphere.
In December in Lemi, the average temperature is -3°C (28°F). The maximum can reach 5°C (42°F), while the minimum can drop as low as -21°C (-5°F). Be prepared for cold conditions and dress warmly if you plan to travel during this time.
In Lemi in December, the total precipitation amount is 72 mm (2.8 in) over the course of 15 days.
In Lemi in December humidity is 95%. With an average temperature of -3°C (28°F), this humidity feels like a biting chill that seeps into your bones, making outdoor travels uncomfortable and urging you to seek warmth and shelter more quickly than you anticipated.
In Lemi 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 Lemi.
UV Risk Categories
Weather in Lemi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Lemi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (24°F) | 49 mm (1.9 inches) | 98% | low |
| February Weather | -5°C (23°F) | 53 mm (2.1 inches) | 96% | low |
| March Weather | -2°C (29°F) | 47 mm (1.8 inches) | 93% | moderate |
| April Weather | 3°C (38°F) | 45 mm (1.8 inches) | 88% | moderate |
| May Weather | 10°C (50°F) | 56 mm (2.2 inches) | 77% | moderate |
| June Weather | 16°C (61°F) | 57 mm (2.3 inches) | 75% | high |
| July Weather | 18°C (64°F) | 81 mm (3.2 inches) | 82% | high |
| August Weather | 16°C (61°F) | 88 mm (3.5 inches) | 84% | moderate |
| September Weather | 11°C (52°F) | 66 mm (2.6 inches) | 90% | moderate |
| October Weather | 6°C (43°F) | 75 mm (3.0 inches) | 93% | low |
| November Weather | 2°C (36°F) | 50 mm (2.0 inches) | 93% | low |
| December Weather | -3°C (28°F) | 72 mm (2.8 inches) | 95% | low |