Last updated: August 27, 2025
In December, the average temperature in Ostansjo, Sweden hovers around -7°C (20°F). Expect chilly conditions, with minimum temperatures plummeting to -27°C (-16°F) and maximums peaking at 6°C (43°F). The month brings about 71 mm (2.8 in) of precipitation over 17 days, resulting in a notably high average humidity of 100%. Prepare for a cold and damp experience!
In December in Ostansjo, the average temperature is -7°C (20°F), with maximums reaching 6°C (43°F) and minimums dropping as low as -27°C (-16°F). Be sure to bundle up if you're traveling to Ostansjo this month, as the weather can be quite chilly!
In Ostansjo in December, the total precipitation amount is 71 mm (2.8 in) over the course of 17 days.
In Ostansjo in December, humidity is 100%. With an average temperature of -7°C (20°F), this humidity feels like an icy suffocation, making travel cumbersome as you battle both the chill and the dampness that clings to your skin, creating an overwhelming sense of discomfort.
In Ostansjo 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 Ostansjo.
UV Risk Categories
Weather in Ostansjo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ostansjo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -10°C (15°F) | 54 mm (2.1 inches) | 100% | low |
| February Weather | -9°C (15°F) | 40 mm (1.6 inches) | 98% | low |
| March Weather | -5°C (23°F) | 48 mm (1.9 inches) | 95% | low |
| April Weather | 0°C (31°F) | 31 mm (1.2 inches) | 91% | moderate |
| May Weather | 5°C (41°F) | 58 mm (2.3 inches) | 85% | moderate |
| June Weather | 12°C (53°F) | 63 mm (2.5 inches) | 79% | high |
| July Weather | 14°C (58°F) | 86 mm (3.4 inches) | 84% | high |
| August Weather | 12°C (54°F) | 104 mm (4.1 inches) | 91% | moderate |
| September Weather | 7°C (45°F) | 78 mm (3.1 inches) | 94% | moderate |
| October Weather | 2°C (35°F) | 94 mm (3.7 inches) | 96% | low |
| November Weather | -4°C (25°F) | 66 mm (2.6 inches) | 98% | low |
| December Weather | -7°C (20°F) | 71 mm (2.8 inches) | 100% | low |