Last updated: August 23, 2025
In Castelnau-de-Brassac, France, the average temperature in December hovers around 5°C (42°F). Expect cooler days with a minimum of -5°C (23°F) and occasional warmth peaking at 16°C (62°F). Be prepared for 138 mm (5.4 in) of precipitation spread over 17 days, and brace yourself for high humidity levels at 88%.
In December in Castelnau-de-Brassac, the average temperature is 5°C (42°F), with maximums reaching 16°C (62°F) and minimums dropping as low as -5°C (23°F). Be prepared for chilly weather and pack accordingly if you're planning to travel during this time!
In Castelnau-de-Brassac in December, the precipitation amount is 138 mm (5.4 in) spread over 17 days.
In Castelnau-de-Brassac in December humidity is 88%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less appealing and leading you to seek warmth indoors instead.
In Castelnau-de-Brassac 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 Castelnau-de-Brassac, you can visit Hourly UV Index in Castelnau-de-Brassac.
UV Risk Categories
Weather in Castelnau-de-Brassac varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Castelnau-de-Brassac, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (39°F) | 114 mm (4.5 inches) | 87% | low |
| February Weather | 6°C (44°F) | 82 mm (3.2 inches) | 83% | moderate |
| March Weather | 8°C (46°F) | 100 mm (3.9 inches) | 80% | high |
| April Weather | 10°C (51°F) | 85 mm (3.3 inches) | 77% | high |
| May Weather | 14°C (57°F) | 126 mm (5.0 inches) | 75% | very high |
| June Weather | 18°C (65°F) | 99 mm (3.9 inches) | 74% | very high |
| July Weather | 20°C (69°F) | 78 mm (3.1 inches) | 72% | very high |
| August Weather | 20°C (69°F) | 46 mm (1.8 inches) | 70% | very high |
| September Weather | 17°C (62°F) | 68 mm (2.7 inches) | 73% | high |
| October Weather | 12°C (54°F) | 101 mm (4.0 inches) | 82% | moderate |
| November Weather | 8°C (46°F) | 100 mm (3.9 inches) | 87% | moderate |
| December Weather | 5°C (42°F) | 138 mm (5.4 inches) | 88% | low |