Last updated: June 24, 2025
In Vienna, United States, the average temperature in December hovers around -4°C (26°F). However, if you're braving the cold, be prepared for a minimum plunge to -24°C (-12°F), while the mercury can rise to a pleasant 15°C (59°F). Expect about 113 mm (4.4 in) of precipitation over 10 days, complemented by an average humidity of 85%.
In December in Vienna, the average temperature is -4°C (26°F). The maximum can reach 15°C (59°F), while the minimum can drop as low as -24°C (-12°F). When traveling during this time, be prepared for a wide range of temperatures and dress in layers to stay comfortable.
In Vienna in December, the total precipitation amount is 113 mm (4.4 in) over a span of 10 days.
In Vienna in December humidity is 85%. With an average temperature of -4°C (26°F), this humidity feels like a biting chill that seeps through your layers, making travel uncomfortable and urging you to seek warmth quickly.
In Vienna 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 Vienna, you can visit Hourly UV Index in Vienna.
UV Risk Categories
Weather in Vienna varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Vienna, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 83 mm (3.2 inches) | 91% | low |
| February Weather | -5°C (23°F) | 84 mm (3.3 inches) | 89% | moderate |
| March Weather | -1°C (31°F) | 72 mm (2.9 inches) | 85% | moderate |
| April Weather | 6°C (43°F) | 121 mm (4.8 inches) | 84% | very high |
| May Weather | 13°C (55°F) | 83 mm (3.3 inches) | 78% | very high |
| June Weather | 18°C (65°F) | 74 mm (2.9 inches) | 72% | very high |
| July Weather | 21°C (70°F) | 121 mm (4.7 inches) | 75% | very high |
| August Weather | 21°C (69°F) | 82 mm (3.2 inches) | 74% | very high |
| September Weather | 17°C (62°F) | 70 mm (2.7 inches) | 77% | high |
| October Weather | 10°C (50°F) | 127 mm (5.0 inches) | 85% | moderate |
| November Weather | 2°C (36°F) | 110 mm (4.3 inches) | 86% | moderate |
| December Weather | -4°C (26°F) | 113 mm (4.4 inches) | 85% | low |