Last updated: August 27, 2025
In Ecublens, Switzerland, the average temperature in December is a cool 4°C (39°F), with temperatures dipping as low as -4°C (25°F) and peaking at 13°C (55°F). Prepare for a wet month, as precipitation amounts to 186 mm (7.3 in) across 17 days. With an average humidity level of 91%, you can expect a distinct chill in the air!
In December in Ecublens, the average temperature is 4°C (39°F), with maximums reaching 13°C (55°F) and minimums dropping as low as -4°C (25°F). Travelers should be prepared for chilly weather and pack warm clothing to fully enjoy their experience in Ecublens.
In Ecublens in December, the precipitation amount is 186 mm (7.3 in), occurring over the course of 17 days.
In Ecublens in December, humidity is 91%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and forcing travelers to bundle up tightly against the cold, sticky air.
In Ecublens 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 Ecublens, you can visit Hourly UV Index in Ecublens.
UV Risk Categories
Weather in Ecublens varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ecublens, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 116 mm (4.6 inches) | 91% | low |
| February Weather | 4°C (40°F) | 93 mm (3.7 inches) | 89% | moderate |
| March Weather | 6°C (43°F) | 111 mm (4.4 inches) | 87% | high |
| April Weather | 9°C (49°F) | 59 mm (2.3 inches) | 84% | high |
| May Weather | 12°C (55°F) | 142 mm (5.6 inches) | 80% | very high |
| June Weather | 17°C (64°F) | 103 mm (4.1 inches) | 82% | very high |
| July Weather | 19°C (67°F) | 106 mm (4.2 inches) | 82% | very high |
| August Weather | 19°C (67°F) | 101 mm (4.0 inches) | 77% | very high |
| September Weather | 16°C (61°F) | 75 mm (2.9 inches) | 81% | high |
| October Weather | 12°C (53°F) | 104 mm (4.1 inches) | 89% | moderate |
| November Weather | 7°C (45°F) | 98 mm (3.8 inches) | 89% | moderate |
| December Weather | 4°C (39°F) | 186 mm (7.3 inches) | 91% | low |