Last updated: August 23, 2025
In December, the average temperature in Sulkava, Finland hovers around -3°C (26°F), with extremes ranging from a chilling -22°C (-8°F) to a milder 4°C (40°F). Expect about 72 mm (2.8 in) of precipitation over 16 days, contributing to a high average humidity of 95%. Prepare for brisk conditions and be ready for the cozy warmth of indoor spaces!
In December in Sulkava, the average temperature is -3°C (26°F), with maximums reaching 4°C (40°F) and minimums dropping as low as -22°C (-8°F). Make sure to bundle up and prepare for some chilly weather if you're planning to visit!
In Sulkava in December, the precipitation amount is 72 mm (2.8 in) over the course of 16 days.
In Sulkava in December humidity is 95%. With an average temperature of -3°C (26°F), this humidity feels like a biting chill that seeps into your bones, making any outdoor activity uncomfortable and challenging for travelers.
In Sulkava 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 Sulkava.
UV Risk Categories
Weather in Sulkava varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sulkava, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 48 mm (1.9 inches) | 98% | low |
| February Weather | -6°C (22°F) | 47 mm (1.8 inches) | 96% | low |
| March Weather | -3°C (28°F) | 45 mm (1.8 inches) | 93% | moderate |
| April Weather | 2°C (37°F) | 45 mm (1.8 inches) | 88% | moderate |
| May Weather | 10°C (50°F) | 52 mm (2.0 inches) | 77% | moderate |
| June Weather | 16°C (61°F) | 64 mm (2.5 inches) | 75% | high |
| July Weather | 18°C (64°F) | 72 mm (2.8 inches) | 82% | high |
| August Weather | 16°C (61°F) | 85 mm (3.3 inches) | 84% | moderate |
| September Weather | 11°C (51°F) | 71 mm (2.8 inches) | 90% | moderate |
| October Weather | 5°C (42°F) | 75 mm (2.9 inches) | 93% | low |
| November Weather | 1°C (34°F) | 55 mm (2.2 inches) | 93% | low |
| December Weather | -3°C (26°F) | 72 mm (2.8 inches) | 95% | low |