Last updated: August 27, 2025
In Mjaellby, Sweden, the average temperature in December hovers around 4°C (40°F). While it can dip to a chilling -6°C (22°F), it may also reach a pleasant 10°C (49°F). Expect about 99 mm (3.9 in) of precipitation spread over 19 days, with an average humidity level of 85%.
In December in Mjaellby, the average temperature is 4°C (40°F). The maximum can reach 10°C (49°F) and the minimum can be as low as -6°C (22°F). Be prepared for chilly weather and pack accordingly if you plan to travel during this time.
In Mjaellby in December, the precipitation amount is 99 mm (3.9 in) spread over 19 days.
In Mjaellby in December, humidity is 85%. With an average temperature of 4°C (40°F), this humidity feels like an icy blanket wrapping around you, making outdoor activities feel much colder and damp, which can be quite uncomfortable for traveling.
In Mjaellby 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 Mjaellby.
UV Risk Categories
Weather in Mjaellby varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mjaellby, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 62 mm (2.5 inches) | 87% | low |
| February Weather | 2°C (37°F) | 69 mm (2.7 inches) | 88% | low |
| March Weather | 3°C (38°F) | 59 mm (2.3 inches) | 87% | moderate |
| April Weather | 6°C (43°F) | 31 mm (1.2 inches) | 85% | moderate |
| May Weather | 10°C (50°F) | 42 mm (1.6 inches) | 82% | high |
| June Weather | 16°C (61°F) | 41 mm (1.6 inches) | 81% | high |
| July Weather | 18°C (64°F) | 56 mm (2.2 inches) | 82% | high |
| August Weather | 18°C (64°F) | 68 mm (2.7 inches) | 80% | high |
| September Weather | 15°C (59°F) | 70 mm (2.7 inches) | 82% | moderate |
| October Weather | 11°C (52°F) | 94 mm (3.7 inches) | 85% | moderate |
| November Weather | 7°C (46°F) | 76 mm (3.0 inches) | 85% | low |
| December Weather | 4°C (40°F) | 99 mm (3.9 inches) | 85% | low |