Last updated: August 23, 2025
In Karkkila, Finland, the average temperature in December hovers around -2°C (29°F). Expect chilly conditions, with minimums plummeting to -20°C (-4°F) and highs reaching up to 6°C (43°F). Total precipitation is 70 mm (2.7 in) over approximately 15 days, contributing to a high average humidity of 95%. Prepare for a wintry mix, perfect for cozy indoor activities!
In December in Karkkila, the average temperature is -2°C (29°F), with maximums reaching 6°C (43°F) and minimums dipping as low as -20°C (-4°F). It's advisable to dress warmly and prepare for cold conditions if you're planning to travel during this time.
In Karkkila in December, the precipitation amount is 70 mm (2.7 in) over a period of 15 days.
In Karkkila in December, humidity is 95%. With an average temperature of -2°C (29°F), this humidity feels like a cold, damp chill that seeps into your bones, making outdoor travel uncomfortable and necessitating extra layers to stay warm and dry.
In Karkkila 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 Karkkila.
UV Risk Categories
Weather in Karkkila varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Karkkila, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 54 mm (2.1 inches) | 97% | low |
| February Weather | -4°C (25°F) | 47 mm (1.8 inches) | 95% | low |
| March Weather | -1°C (30°F) | 50 mm (2.0 inches) | 93% | moderate |
| April Weather | 3°C (38°F) | 43 mm (1.7 inches) | 86% | moderate |
| May Weather | 10°C (50°F) | 59 mm (2.3 inches) | 75% | moderate |
| June Weather | 16°C (61°F) | 61 mm (2.4 inches) | 75% | high |
| July Weather | 18°C (64°F) | 89 mm (3.5 inches) | 80% | high |
| August Weather | 16°C (61°F) | 83 mm (3.3 inches) | 83% | moderate |
| September Weather | 11°C (53°F) | 65 mm (2.6 inches) | 90% | moderate |
| October Weather | 6°C (44°F) | 82 mm (3.2 inches) | 93% | low |
| November Weather | 2°C (37°F) | 56 mm (2.2 inches) | 94% | low |
| December Weather | -2°C (29°F) | 70 mm (2.7 inches) | 95% | low |