Last updated: August 23, 2025
In December, the average temperature in Slagelse, Denmark hovers around 4°C (40°F). Expect chilly conditions, with minimum temperatures dropping to -4°C (25°F) and maximums reaching up to 10°C (50°F). The region also sees about 68 mm (2.7 in) of precipitation spread over 14 days, contributing to a high average humidity of 88%. Be prepared for a damp and cool climate!
In December in Slagelse, the average temperature is 4°C (40°F). Maximums can reach 10°C (50°F), and minimums can be as low as -4°C (25°F). Be sure to pack warm clothing and prepare for chilly weather if you're planning to visit during this time.
In Slagelse in December, the precipitation amount is 68 mm (2.7 in) distributed over a period of 14 days.
In Slagelse in December, humidity is 88%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and prompting you to seek cozy indoor activities instead.
In Slagelse 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 Slagelse.
UV Risk Categories
Weather in Slagelse varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Slagelse, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (38°F) | 61 mm (2.4 inches) | 90% | low |
| February Weather | 3°C (37°F) | 52 mm (2.0 inches) | 89% | low |
| March Weather | 4°C (39°F) | 62 mm (2.5 inches) | 88% | moderate |
| April Weather | 7°C (45°F) | 36 mm (1.4 inches) | 85% | moderate |
| May Weather | 12°C (53°F) | 59 mm (2.3 inches) | 80% | high |
| June Weather | 17°C (62°F) | 53 mm (2.1 inches) | 77% | very high |
| July Weather | 18°C (64°F) | 78 mm (3.1 inches) | 77% | high |
| August Weather | 18°C (65°F) | 90 mm (3.5 inches) | 77% | high |
| September Weather | 15°C (59°F) | 79 mm (3.1 inches) | 83% | moderate |
| October Weather | 11°C (53°F) | 94 mm (3.7 inches) | 87% | moderate |
| November Weather | 7°C (46°F) | 54 mm (2.1 inches) | 89% | low |
| December Weather | 4°C (40°F) | 68 mm (2.7 inches) | 88% | low |