Last updated: August 23, 2025
In Salla, Finland, the average temperature in December hovers around -7°C (19°F), with extremes plunging to a chilly -30°C (-21°F) and occasionally reaching a maximum of 2°C (36°F). This month sees 54 mm (2.1 in) of precipitation spread over 14 days, accompanied by an astonishing average humidity level of 101%. Prepare for a truly wintry experience!
In December in Salla, the average temperature is -7°C (19°F), with maximums reaching 2°C (36°F) and minimums dipping as low as -30°C (-21°F). Travelers should be prepared for very cold conditions and pack appropriately for the extreme weather.
In Salla in December, the total precipitation amount is 54 mm (2.1 in) recorded over a span of 14 days.
In Salla in December humidity is 101%. With an average temperature of -7°C (19°F), this humidity feels like you’re stepping into a frigid mist that clings to your skin, making travel uncomfortable as each breath creates small clouds of vapor in the chilly air.
In Salla 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 Salla.
UV Risk Categories
Weather in Salla varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Salla, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -11°C (13°F) | 39 mm (1.5 inches) | 101% | low |
| February Weather | -11°C (12°F) | 36 mm (1.4 inches) | 99% | low |
| March Weather | -6°C (21°F) | 43 mm (1.7 inches) | 94% | low |
| April Weather | -1°C (31°F) | 41 mm (1.6 inches) | 89% | moderate |
| May Weather | 5°C (42°F) | 49 mm (1.9 inches) | 84% | moderate |
| June Weather | 12°C (54°F) | 85 mm (3.4 inches) | 81% | moderate |
| July Weather | 15°C (60°F) | 74 mm (2.9 inches) | 84% | high |
| August Weather | 12°C (54°F) | 104 mm (4.1 inches) | 88% | moderate |
| September Weather | 7°C (45°F) | 72 mm (2.8 inches) | 92% | moderate |
| October Weather | 1°C (34°F) | 80 mm (3.1 inches) | 97% | low |
| November Weather | -4°C (25°F) | 61 mm (2.4 inches) | 97% | low |
| December Weather | -7°C (19°F) | 54 mm (2.1 inches) | 101% | low |