Last updated: August 23, 2025
In December, the average temperature in Hyrynsalmi, Finland hovers around -6°C (22°F). Expect chilly days with minimums dipping down to -21°C (-6°F) and highs reaching up to 3°C (38°F). As you prepare for your visit, keep in mind that this month sees 66 mm (2.6 in) of precipitation spread over 16 days, contributing to a comforting 100% humidity level.
In December in Hyrynsalmi, the average temperature is -6°C (22°F), with maximums reaching 3°C (38°F) and minimums dropping as low as -21°C (-6°F). Travelers should be prepared for cold weather and dress warmly when visiting during this time.
In Hyrynsalmi, in December, the precipitation amount is 66 mm (2.6 in) over a span of 16 days.
In Hyrynsalmi in December humidity is 100%. With average temperature -6°C (22°F), this humidity feels like walking through a heavy, icy fog that quickly sap your energy, making travel feel like an endless battle against the chill that clings to your skin and seeps into your bones.
In Hyrynsalmi 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 Hyrynsalmi.
UV Risk Categories
Weather in Hyrynsalmi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Hyrynsalmi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (17°F) | 46 mm (1.8 inches) | 101% | low |
| February Weather | -9°C (15°F) | 41 mm (1.6 inches) | 99% | low |
| March Weather | -5°C (23°F) | 48 mm (1.9 inches) | 94% | low |
| April Weather | 1°C (33°F) | 43 mm (1.7 inches) | 88% | moderate |
| May Weather | 6°C (44°F) | 58 mm (2.3 inches) | 83% | moderate |
| June Weather | 14°C (57°F) | 73 mm (2.9 inches) | 79% | high |
| July Weather | 16°C (61°F) | 87 mm (3.4 inches) | 83% | high |
| August Weather | 13°C (56°F) | 106 mm (4.2 inches) | 87% | moderate |
| September Weather | 8°C (47°F) | 86 mm (3.4 inches) | 91% | moderate |
| October Weather | 3°C (37°F) | 88 mm (3.5 inches) | 96% | low |
| November Weather | -2°C (29°F) | 77 mm (3.0 inches) | 96% | low |
| December Weather | -6°C (22°F) | 66 mm (2.6 inches) | 100% | low |