Last updated: August 23, 2025
In December, the average temperature in Sallanches, France hovers around -6°C (22°F). While the mercury can dip as low as -23°C (-8°F), it may occasionally rise to a comfortable 8°C (46°F). Expect a significant precipitation amount of 295 mm (11.6 in) spread over 19 days, coupled with an average humidity of 90%, creating a crisp and chilly atmosphere perfect for cozy indoor activities.
In December in Sallanches, the average temperature is -6°C (22°F), with a maximum reaching 8°C (46°F) and a minimum dipping as low as -23°C (-8°F). It's important to be well-prepared for cold weather conditions if you plan to travel during this time.
In Sallanches in December, the precipitation amount is 295 mm (11.6 in) during a span of 19 days.
In Sallanches in December, humidity is 90%. With an average temperature of -6°C (22°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to stay warm while navigating through the damp, frosty air.
In Sallanches 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 Sallanches, you can visit Hourly UV Index in Sallanches.
UV Risk Categories
Weather in Sallanches varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sallanches, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (19°F) | 171 mm (6.7 inches) | 91% | moderate |
| February Weather | -4°C (26°F) | 141 mm (5.5 inches) | 87% | moderate |
| March Weather | -1°C (31°F) | 175 mm (6.9 inches) | 84% | high |
| April Weather | 3°C (38°F) | 84 mm (3.3 inches) | 83% | very high |
| May Weather | 7°C (45°F) | 224 mm (8.8 inches) | 78% | very high |
| June Weather | 12°C (54°F) | 167 mm (6.6 inches) | 75% | very high |
| July Weather | 14°C (57°F) | 162 mm (6.4 inches) | 72% | very high |
| August Weather | 13°C (56°F) | 149 mm (5.9 inches) | 63% | very high |
| September Weather | 10°C (49°F) | 109 mm (4.3 inches) | 73% | high |
| October Weather | 5°C (42°F) | 133 mm (5.3 inches) | 89% | moderate |
| November Weather | -1°C (30°F) | 120 mm (4.7 inches) | 90% | moderate |
| December Weather | -6°C (22°F) | 295 mm (11.6 inches) | 90% | low |