Last updated: August 23, 2025
In Castelsarrasin, France, the average temperature for December hovers around 8°C (46°F). Expect a chill in the air, with lows dipping to a brisk -4°C (25°F) and highs reaching a pleasant 18°C (65°F). Be prepared for 103 mm (4.1 in) of precipitation spread over about 14 days, coupled with an average humidity level of 88%.
In December in Castelsarrasin, the average temperature is 8°C (46°F). The maximum can reach 18°C (65°F), while the minimum can drop to as low as -4°C (25°F). Be prepared for a mix of chilly and mild weather during your travels.
In Castelsarrasin in December, the precipitation amount is 103 mm (4.1 in) distributed over a period of 14 days.
In Castelsarrasin in December, humidity is 88%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration feel much more uncomfortable than the temperature alone would suggest.
In Castelsarrasin 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 Castelsarrasin, you can visit Hourly UV Index in Castelsarrasin.
UV Risk Categories
Weather in Castelsarrasin varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Castelsarrasin, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 49 mm (1.9 inches) | 87% | low |
| February Weather | 9°C (48°F) | 57 mm (2.2 inches) | 83% | moderate |
| March Weather | 10°C (51°F) | 59 mm (2.3 inches) | 80% | moderate |
| April Weather | 13°C (56°F) | 56 mm (2.2 inches) | 77% | high |
| May Weather | 17°C (63°F) | 87 mm (3.4 inches) | 75% | very high |
| June Weather | 21°C (70°F) | 86 mm (3.4 inches) | 74% | very high |
| July Weather | 24°C (75°F) | 49 mm (1.9 inches) | 72% | very high |
| August Weather | 23°C (74°F) | 53 mm (2.1 inches) | 70% | very high |
| September Weather | 20°C (68°F) | 48 mm (1.9 inches) | 73% | high |
| October Weather | 15°C (59°F) | 62 mm (2.4 inches) | 82% | moderate |
| November Weather | 10°C (50°F) | 69 mm (2.7 inches) | 87% | moderate |
| December Weather | 8°C (46°F) | 103 mm (4.1 inches) | 88% | low |