Last updated: August 27, 2025
In December, the average temperature in Termen, Switzerland hovers around -8°C (18°F). While you may experience chilling lows of -25°C (-12°F), the mercury can occasionally peak at a mild 4°C (40°F). Expect 156 mm (6.2 in) of precipitation spread over 17 days, contributing to a notably high average humidity of 90%. Prepare for a truly frosty experience!
In December in Termen, the average temperature is -8°C (18°F), with maxima reaching up to 4°C (40°F) and minima dipping to as low as -25°C (-12°F). Travelers should be prepared for very cold conditions and consider appropriate winter clothing when visiting during this time.
In Termen in December, the precipitation amount reaches 156 mm (6.2 in) over the course of 17 days.
In Termen in December, humidity is 90%. With an average temperature of -8°C (18°F), this humidity feels like an icy fog wrapping around you, making every breath sharp and crisp, and requiring careful planning for travel to avoid the chill while navigating the damp air.
In Termen 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 Termen, you can visit Hourly UV Index in Termen.
UV Risk Categories
Weather in Termen varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Termen, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 115 mm (4.5 inches) | 92% | moderate |
| February Weather | -5°C (23°F) | 75 mm (2.9 inches) | 89% | moderate |
| March Weather | -3°C (27°F) | 111 mm (4.4 inches) | 87% | very high |
| April Weather | 1°C (35°F) | 113 mm (4.4 inches) | 84% | very high |
| May Weather | 5°C (41°F) | 163 mm (6.4 inches) | 80% | very high |
| June Weather | 11°C (52°F) | 173 mm (6.8 inches) | 82% | extreme |
| July Weather | 13°C (55°F) | 131 mm (5.2 inches) | 83% | very high |
| August Weather | 12°C (54°F) | 151 mm (6.0 inches) | 80% | very high |
| September Weather | 8°C (48°F) | 116 mm (4.6 inches) | 83% | high |
| October Weather | 4°C (39°F) | 195 mm (7.7 inches) | 90% | high |
| November Weather | -3°C (27°F) | 141 mm (5.5 inches) | 88% | moderate |
| December Weather | -8°C (18°F) | 156 mm (6.2 inches) | 90% | low |