Last updated: August 23, 2025
In December, the average temperature in Haapavesi, Finland hovers around -4°C (25°F). Expect chilly extremes with minimums plummeting to -22°C (-7°F) and maximums reaching up to 5°C (41°F). During this month, precipitation totals 52 mm (2.0 in) over approximately 12 days, while the air remains notably humid with an average humidity level of 99%.
In December in Haapavesi, the average temperature is -4°C (25°F), with maximums reaching up to 5°C (41°F) and minimums plummeting as low as -22°C (-7°F). It's essential to pack warm clothing and be prepared for fluctuating temperatures if you're planning to travel during this month.
In Haapavesi in December, the precipitation amount is 52 mm (2.0 in) over a span of 12 days.
In Haapavesi in December humidity is 99%. With an average temperature of -4°C (25°F), this humidity feels like a heavy blanket wrapped around you, making every step outside feel like a toe-curling challenge as the cold air grips you and the dampness seeps into your bones, leaving you longing for the warmth of a cozy indoor space.
In Haapavesi 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 Haapavesi.
UV Risk Categories
Weather in Haapavesi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Haapavesi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (20°F) | 39 mm (1.5 inches) | 100% | low |
| February Weather | -8°C (19°F) | 39 mm (1.6 inches) | 98% | low |
| March Weather | -3°C (26°F) | 38 mm (1.5 inches) | 95% | low |
| April Weather | 2°C (35°F) | 42 mm (1.6 inches) | 87% | moderate |
| May Weather | 8°C (47°F) | 59 mm (2.3 inches) | 81% | moderate |
| June Weather | 15°C (59°F) | 57 mm (2.3 inches) | 77% | high |
| July Weather | 17°C (62°F) | 78 mm (3.1 inches) | 79% | high |
| August Weather | 14°C (58°F) | 89 mm (3.5 inches) | 84% | moderate |
| September Weather | 9°C (49°F) | 76 mm (3.0 inches) | 90% | moderate |
| October Weather | 4°C (39°F) | 83 mm (3.3 inches) | 95% | low |
| November Weather | -1°C (31°F) | 62 mm (2.4 inches) | 95% | low |
| December Weather | -4°C (25°F) | 52 mm (2.0 inches) | 99% | low |