Last updated: August 27, 2025
In December, the average temperature in Fahrni, Switzerland hovers around -2°C (29°F), with potential extremes ranging from a chilly -13°C (8°F) to a milder 9°C (49°F). Expect 175 mm (6.9 in) of precipitation over approximately 17 days, and be prepared for high humidity levels averaging 90%. Stay cozy and enjoy the unique winter vibes!
In December, in Fahrni, the average temperature is -2°C (29°F). The maximum can reach 9°C (49°F), while the minimum can drop as low as -13°C (8°F). Be prepared for chilly weather and dress in layers if you're planning to travel during this time.
In Fahrni in December, the precipitation amount is 175 mm (6.9 in) occurring over the course of 17 days.
In Fahrni in December, humidity is 90%. With an average temperature of -2°C (29°F), this humidity feels like an icy breath enveloping you, making every step outdoors feel even colder and more biting, while also creating a heavy, wet atmosphere that can dampen your spirits for traveling.
In Fahrni 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 Fahrni, you can visit Hourly UV Index in Fahrni.
UV Risk Categories
Weather in Fahrni varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Fahrni, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 123 mm (4.9 inches) | 92% | low |
| February Weather | -1°C (31°F) | 103 mm (4.0 inches) | 89% | moderate |
| March Weather | 2°C (36°F) | 125 mm (4.9 inches) | 87% | high |
| April Weather | 5°C (42°F) | 94 mm (3.7 inches) | 84% | high |
| May Weather | 9°C (48°F) | 182 mm (7.2 inches) | 80% | very high |
| June Weather | 14°C (57°F) | 225 mm (8.9 inches) | 82% | very high |
| July Weather | 15°C (60°F) | 219 mm (8.6 inches) | 83% | very high |
| August Weather | 15°C (59°F) | 203 mm (8.0 inches) | 80% | very high |
| September Weather | 11°C (53°F) | 124 mm (4.9 inches) | 83% | high |
| October Weather | 7°C (45°F) | 138 mm (5.4 inches) | 90% | moderate |
| November Weather | 2°C (35°F) | 97 mm (3.8 inches) | 88% | moderate |
| December Weather | -2°C (29°F) | 175 mm (6.9 inches) | 90% | low |