Last updated: August 27, 2025
In Petrozavodsk, Russian Federation, the average temperature in December hovers around -5°C (24°F), with extremes ranging from a minimum of -24°C (-11°F) to a maximum of 4°C (39°F). Expect 64 mm (2.5 in) of precipitation spread across 16 days, while the air remains notably damp with an average humidity of 95%. Stay bundled up and ready for a chilly, wet month ahead!
In December in Petrozavodsk, the average temperature is -5°C (24°F), with maximums reaching 4°C (39°F) and minimums dropping as low as -24°C (-11°F). It's essential to prepare for cold weather conditions when traveling during this time.
In Petrozavodsk in December, the precipitation amount is 64 mm (2.5 in) spread over 16 days.
In Petrozavodsk in December humidity is 95%. With an average temperature of -5°C (24°F), this humidity feels like walking through a dense fog that clings to your skin, making every step you take in the chilly air feel even colder and more uncomfortable, creating a challenge for travelers who may not be prepared for such extreme dampness.
In Petrozavodsk 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 Petrozavodsk.
UV Risk Categories
Weather in Petrozavodsk varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Petrozavodsk, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (20°F) | 40 mm (1.6 inches) | 99% | low |
| February Weather | -7°C (19°F) | 48 mm (1.9 inches) | 97% | low |
| March Weather | -3°C (27°F) | 43 mm (1.7 inches) | 94% | moderate |
| April Weather | 2°C (36°F) | 44 mm (1.8 inches) | 89% | moderate |
| May Weather | 9°C (48°F) | 65 mm (2.5 inches) | 78% | moderate |
| June Weather | 15°C (60°F) | 53 mm (2.1 inches) | 74% | high |
| July Weather | 17°C (62°F) | 98 mm (3.8 inches) | 82% | high |
| August Weather | 15°C (59°F) | 102 mm (4.0 inches) | 87% | moderate |
| September Weather | 10°C (51°F) | 76 mm (3.0 inches) | 91% | moderate |
| October Weather | 5°C (41°F) | 68 mm (2.7 inches) | 93% | low |
| November Weather | 0°C (33°F) | 41 mm (1.6 inches) | 93% | low |
| December Weather | -5°C (24°F) | 64 mm (2.5 inches) | 95% | low |