Last updated: August 28, 2025
In December, the average temperature in Arvayheer, Mongolia hovers around -15°C (5°F). Expect chilly conditions, with minimum temperatures potentially plunging to -31°C (-23°F) and a maximum reaching 5°C (41°F). Precipitation is modest, averaging 4 mm (0.2 in) over about 1 day. Be prepared for a damp experience, as the average humidity sits at a brisk 86%.
In December in Arvayheer, the average temperature is -15°C (5°F), with maximums reaching up to 5°C (41°F) and minimums dropping as low as -31°C (-23°F). Travelers should be prepared for extreme cold and dress accordingly to enjoy their time in this winter wonderland.
In Arvayheer in December, the precipitation amount is 4 mm (0.2 in) during 1 day.
In Arvayheer in December, humidity is 86%. With an average temperature of -15°C (5°F), this humidity feels like a biting chill that makes traveling outside quite uncomfortable, as the damp air seeps through layers of clothing, leaving you feeling cold and heavy.
In Arvayheer in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Arvayheer, you can visit Hourly UV Index in Arvayheer.
UV Risk Categories
Weather in Arvayheer varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Arvayheer, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -16°C (3°F) | 2 mm (0.1 inches) | 89% | low |
| February Weather | -13°C (8°F) | 7 mm (0.3 inches) | 78% | moderate |
| March Weather | -4°C (25°F) | 12 mm (0.5 inches) | 66% | moderate |
| April Weather | 3°C (38°F) | 17 mm (0.7 inches) | 64% | very high |
| May Weather | 10°C (50°F) | 17 mm (0.7 inches) | 52% | very high |
| June Weather | 16°C (61°F) | 24 mm (0.9 inches) | 59% | very high |
| July Weather | 18°C (65°F) | 63 mm (2.5 inches) | 63% | very high |
| August Weather | 15°C (60°F) | 62 mm (2.5 inches) | 62% | very high |
| September Weather | 10°C (51°F) | 22 mm (0.9 inches) | 65% | high |
| October Weather | 1°C (34°F) | 9 mm (0.4 inches) | 65% | moderate |
| November Weather | -7°C (19°F) | 5 mm (0.2 inches) | 69% | moderate |
| December Weather | -15°C (5°F) | 4 mm (0.2 inches) | 86% | low |