Last updated: August 28, 2025
In Altan-Ovoo, Mongolia, the average temperature in December hovers around -15°C (5°F), with potential extremes ranging from a chilling -33°C (-27°F) to a milder 4°C (39°F). Expect minimal precipitation, with just 4 mm (0.2 in) falling over 1 day. Coupled with an average humidity of 89%, this month presents a cold and damp climate that calls for cozy preparations.
In December in Altan-Ovoo, the average temperature is -15°C (5°F), with maximums reaching 4°C (39°F) and minimums dropping as low as -33°C (-27°F). It’s essential to prepare for extremely cold conditions when traveling during this time.
In Altan-Ovoo in December, the precipitation amount is 4 mm (0.2 in) during 1 day.
In Altan-Ovoo in December humidity is 89%. With an average temperature of -15°C (5°F), this humidity feels like an icy fog clinging to your skin, making every breath feel sharper and more biting as you travel through the frosty landscape.
In Altan-Ovoo 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 Altan-Ovoo, you can visit Hourly UV Index in Altan-Ovoo.
UV Risk Categories
Weather in Altan-Ovoo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Altan-Ovoo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -18°C (0°F) | 4 mm (0.1 inches) | 89% | low |
| February Weather | -14°C (7°F) | 8 mm (0.3 inches) | 81% | moderate |
| March Weather | -4°C (25°F) | 11 mm (0.4 inches) | 72% | moderate |
| April Weather | 4°C (39°F) | 22 mm (0.9 inches) | 69% | high |
| May Weather | 11°C (51°F) | 31 mm (1.2 inches) | 54% | very high |
| June Weather | 16°C (62°F) | 55 mm (2.2 inches) | 60% | very high |
| July Weather | 18°C (64°F) | 96 mm (3.8 inches) | 64% | very high |
| August Weather | 15°C (60°F) | 87 mm (3.4 inches) | 65% | very high |
| September Weather | 10°C (51°F) | 39 mm (1.5 inches) | 68% | high |
| October Weather | 1°C (33°F) | 18 mm (0.7 inches) | 68% | high |
| November Weather | -8°C (18°F) | 10 mm (0.4 inches) | 75% | low |
| December Weather | -15°C (5°F) | 4 mm (0.2 inches) | 89% | low |