Last updated: August 23, 2025
In Koosa, Estonia, the average temperature in December hovers around -1°C (30°F), with minimums dropping as low as -20°C (-4°F) and highs reaching up to 8°C (48°F). Expect 53 mm (2.1 in) of precipitation spread across 13 days, contributing to a high average humidity of 93%. Be prepared for a chilly, damp month!
In December in Koosa, the average temperature is -1°C (30°F), with a maximum reaching 8°C (48°F) and a minimum plummeting to -20°C (-4°F). It's advisable to pack warm clothing when traveling during this time.
In Koosa in December, the precipitation amount is 53 mm (2.1 in) over the course of 13 days.
In Koosa 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 Koosa 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 Koosa.
UV Risk Categories
Weather in Koosa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Koosa, 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) | 42 mm (1.6 inches) | 93% | low |
| March Weather | 0°C (33°F) | 43 mm (1.7 inches) | 90% | moderate |
| April Weather | 5°C (41°F) | 49 mm (1.9 inches) | 87% | moderate |
| May Weather | 11°C (52°F) | 58 mm (2.3 inches) | 73% | moderate |
| June Weather | 17°C (63°F) | 65 mm (2.6 inches) | 77% | high |
| July Weather | 18°C (65°F) | 63 mm (2.5 inches) | 80% | high |
| August Weather | 17°C (63°F) | 74 mm (2.9 inches) | 84% | high |
| September Weather | 13°C (55°F) | 59 mm (2.3 inches) | 89% | moderate |
| October Weather | 7°C (46°F) | 70 mm (2.8 inches) | 92% | low |
| November Weather | 3°C (38°F) | 55 mm (2.1 inches) | 93% | low |
| December Weather | -1°C (30°F) | 53 mm (2.1 inches) | 93% | low |