Last updated: August 27, 2025
In December, the average temperature in Sant Celoni, Spain hovers around 7°C (45°F). Expect a chilly minimum of -3°C (27°F) and a pleasant maximum of 18°C (65°F). With an average humidity of 79% and 37 mm (1.5 in) of precipitation spread across 5 days, be prepared for some drizzly moments amidst the cool weather!
In December in Sant Celoni, the average temperature is 7°C (45°F). The maximum can reach 18°C (65°F), while the minimum can drop as low as -3°C (27°F). Travelers should be prepared for a mix of mild and chilly weather during this time.
In Sant Celoni in December, the precipitation amount is 37 mm (1.5 in) spread over a period of 5 days.
In Sant Celoni in December humidity is 79%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill wrapping around you, making outdoor explorations uncomfortable and requiring extra layers for warmth while you navigate through the misty air.
In Sant Celoni 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 Sant Celoni, you can visit Hourly UV Index in Sant Celoni.
UV Risk Categories
Weather in Sant Celoni varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sant Celoni, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 6°C (42°F) | 75 mm (2.9 inches) | 79% | moderate |
| February Weather | 8°C (47°F) | 65 mm (2.6 inches) | 74% | moderate |
| March Weather | 10°C (50°F) | 75 mm (3.0 inches) | 71% | moderate |
| April Weather | 12°C (54°F) | 98 mm (3.9 inches) | 69% | high |
| May Weather | 16°C (61°F) | 107 mm (4.2 inches) | 66% | very high |
| June Weather | 20°C (69°F) | 84 mm (3.3 inches) | 65% | very high |
| July Weather | 23°C (73°F) | 95 mm (3.7 inches) | 64% | very high |
| August Weather | 23°C (74°F) | 93 mm (3.7 inches) | 64% | very high |
| September Weather | 19°C (67°F) | 132 mm (5.2 inches) | 68% | high |
| October Weather | 15°C (60°F) | 151 mm (5.9 inches) | 77% | high |
| November Weather | 10°C (50°F) | 81 mm (3.2 inches) | 79% | moderate |
| December Weather | 7°C (45°F) | 37 mm (1.5 inches) | 79% | low |