Last updated: August 23, 2025
In Ardu, Estonia, the average temperature in December hovers around -1°C (30°F). Expect chilly conditions, with nighttime lows dipping to a frigid -24°C (-12°F) and daytime highs reaching a mere 8°C (46°F). During this month, precipitation accumulates to 55 mm (2.2 in) over about 15 days, paired with a high average humidity of 93%. Stay warm and prepared for the wet, cold days ahead!
In December in Ardu, the average temperature is -1°C (30°F), with a maximum that can reach 8°C (46°F) and a minimum that can drop as low as -24°C (-12°F). Travelers should be prepared for cold weather and potential temperature fluctuations during this time.
In Ardu in December, the precipitation amount is 55 mm (2.2 in) spread over 15 days.
In Ardu in December humidity is 93%. With average temperature -1°C (30°F), this humidity feels like an icy blanket wrapping around you, making every step outside a challenge for travelers. The damp chill seeps into your bones, and even a short stroll can feel exhausting when the air clings closely, creating an almost surreal experience that dampens spirits and slows down every adventure.
In Ardu 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 Ardu.
UV Risk Categories
Weather in Ardu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ardu, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (28°F) | 41 mm (1.6 inches) | 95% | low |
| February Weather | -3°C (27°F) | 46 mm (1.8 inches) | 93% | low |
| March Weather | 0°C (32°F) | 48 mm (1.9 inches) | 90% | moderate |
| April Weather | 5°C (41°F) | 47 mm (1.9 inches) | 87% | moderate |
| May Weather | 10°C (51°F) | 55 mm (2.2 inches) | 73% | moderate |
| June Weather | 16°C (61°F) | 66 mm (2.6 inches) | 77% | high |
| July Weather | 18°C (64°F) | 76 mm (3.0 inches) | 80% | high |
| August Weather | 16°C (61°F) | 104 mm (4.1 inches) | 84% | high |
| September Weather | 12°C (54°F) | 69 mm (2.7 inches) | 89% | moderate |
| October Weather | 7°C (45°F) | 86 mm (3.4 inches) | 92% | low |
| November Weather | 3°C (38°F) | 53 mm (2.1 inches) | 93% | low |
| December Weather | -1°C (30°F) | 55 mm (2.2 inches) | 93% | low |