Last updated: August 23, 2025
In December, the average temperature in Pori, Finland is a crisp 0°C (32°F). Expect chilly days with minimums dipping as low as -17°C (2°F) and highs reaching 6°C (43°F). The precipitation during this month averages 69 mm (2.7 in) spread over 14 days, while the average humidity hovers around a damp 89%. Be prepared for cool, wet conditions!
In December in Pori, the average temperature is 0°C (32°F). Maximums can reach 6°C (43°F), while minimums can drop as low as -17°C (2°F). Travelers should be prepared for chilly conditions and dress in layers to stay warm during their visit.
In Pori in December, the precipitation amount is 69 mm (2.7 in) over the course of 14 days.
In Pori in December humidity is 89%. With an average temperature of 0°C (32°F), this humidity feels like a chilly embrace that makes every breath feel heavy and damp, turning your travel experience into a constant dance with the cold and moisture in the air, leaving you longing for warmth and comfort at every turn.
In Pori 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 Pori.
UV Risk Categories
Weather in Pori varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Pori, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 43 mm (1.7 inches) | 92% | low |
| February Weather | -3°C (26°F) | 42 mm (1.6 inches) | 90% | low |
| March Weather | -1°C (31°F) | 43 mm (1.7 inches) | 89% | moderate |
| April Weather | 4°C (39°F) | 40 mm (1.6 inches) | 85% | moderate |
| May Weather | 9°C (48°F) | 41 mm (1.6 inches) | 77% | moderate |
| June Weather | 15°C (59°F) | 50 mm (2.0 inches) | 78% | high |
| July Weather | 17°C (63°F) | 83 mm (3.2 inches) | 78% | high |
| August Weather | 16°C (61°F) | 93 mm (3.7 inches) | 79% | moderate |
| September Weather | 12°C (54°F) | 77 mm (3.0 inches) | 86% | moderate |
| October Weather | 7°C (45°F) | 88 mm (3.4 inches) | 90% | low |
| November Weather | 3°C (39°F) | 65 mm (2.6 inches) | 91% | low |
| December Weather | 0°C (32°F) | 69 mm (2.7 inches) | 89% | low |