Last updated: August 22, 2025
In December, the average temperature in Jomala, Åland Islands hovers around 2°C (36°F), with a minimum dipping to -10°C (14°F) and a maximum reaching 8°C (48°F). Expect 71 mm (2.8 in) of precipitation over 16 days, contributing to a notably high humidity of 90%.
In December in Jomala, the average temperature is 2°C (36°F). The maximum can reach 8°C (48°F), and the minimum can be as low as -10°C (14°F). If you're planning to travel during this time, be sure to pack warm clothing to stay comfortable in the chilly weather.
In Jomala in December, the precipitation amount is 71 mm (2.8 in) over the course of 16 days.
In Jomala in December humidity is 90%. With an average temperature of 2°C (36°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and damp, and turning a simple stroll into a test of endurance for travelers.
In Jomala 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 Jomala.
UV Risk Categories
Weather in Jomala varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Jomala, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 44 mm (1.7 inches) | 92% | low |
| February Weather | 0°C (32°F) | 34 mm (1.3 inches) | 90% | low |
| March Weather | 1°C (34°F) | 36 mm (1.4 inches) | 90% | moderate |
| April Weather | 4°C (39°F) | 25 mm (1.0 inches) | 85% | moderate |
| May Weather | 8°C (47°F) | 38 mm (1.5 inches) | 77% | moderate |
| June Weather | 15°C (58°F) | 30 mm (1.2 inches) | 76% | high |
| July Weather | 17°C (63°F) | 47 mm (1.9 inches) | 75% | high |
| August Weather | 17°C (63°F) | 56 mm (2.2 inches) | 78% | moderate |
| September Weather | 13°C (56°F) | 57 mm (2.3 inches) | 86% | moderate |
| October Weather | 9°C (48°F) | 87 mm (3.4 inches) | 90% | low |
| November Weather | 6°C (42°F) | 50 mm (2.0 inches) | 91% | low |
| December Weather | 2°C (36°F) | 71 mm (2.8 inches) | 90% | low |