Last updated: August 23, 2025
In Mustla, Estonia, the average temperature in December hovers around -1°C (30°F). Be prepared for chilly conditions, with minimums dipping as low as -25°C (-12°F) and maximums reaching up to 9°C (48°F). This month sees approximately 52 mm (2.0 in) of precipitation spread over 13 days, contributing to an average humidity of a brisk 93%.
In December in Mustla, the average temperature is -1°C (30°F), with maximums reaching 9°C (48°F) and minimums dropping to as low as -25°C (-12°F). Travelers should be prepared for cold conditions and significant temperature fluctuations during this time.
In Mustla in December, the total precipitation amount is 52 mm (2.0 in) over the course of 13 days.
In Mustla 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 Mustla 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 Mustla.
UV Risk Categories
Weather in Mustla varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mustla, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (28°F) | 38 mm (1.5 inches) | 95% | low |
| February Weather | -3°C (27°F) | 46 mm (1.8 inches) | 93% | low |
| March Weather | 0°C (32°F) | 51 mm (2.0 inches) | 90% | moderate |
| April Weather | 5°C (42°F) | 50 mm (2.0 inches) | 87% | moderate |
| May Weather | 11°C (52°F) | 51 mm (2.0 inches) | 73% | moderate |
| June Weather | 17°C (62°F) | 72 mm (2.8 inches) | 77% | high |
| July Weather | 18°C (64°F) | 78 mm (3.1 inches) | 80% | high |
| August Weather | 17°C (62°F) | 94 mm (3.7 inches) | 84% | high |
| September Weather | 13°C (55°F) | 73 mm (2.9 inches) | 89% | moderate |
| October Weather | 7°C (46°F) | 79 mm (3.1 inches) | 92% | low |
| November Weather | 3°C (38°F) | 56 mm (2.2 inches) | 93% | low |
| December Weather | -1°C (30°F) | 52 mm (2.0 inches) | 93% | low |