Last updated: August 23, 2025
In December, the average temperature in Merck-Saint-Lievin, France hovers around 6°C (43°F). Expect a chill, with minimums dipping to -3°C (27°F) and maximums reaching 14°C (57°F). You'll also want to prepare for about 117 mm (4.6 in) of precipitation spread over 17 days, contributing to an average humidity of 92%. Stay cozy and dry!
In December in Merck-Saint-Lievin, the average temperature is 6°C (43°F), with maximums reaching 14°C (57°F) and minimums dropping as low as -3°C (27°F). Be prepared for chilly days and layer your clothing if you're planning to travel during this time.
In Merck-Saint-Lievin in December, the precipitation amount is 117 mm (4.6 in) over the course of 17 days.
In Merck-Saint-Lievin in December humidity is 92%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps through your clothes, making outdoor activities uncomfortable and requiring extra layers for warmth while navigating the slick streets.
In Merck-Saint-Lievin in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Merck-Saint-Lievin.
UV Risk Categories
Weather in Merck-Saint-Lievin varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Merck-Saint-Lievin, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 72 mm (2.8 inches) | 91% | low |
| February Weather | 6°C (43°F) | 70 mm (2.8 inches) | 89% | low |
| March Weather | 7°C (46°F) | 73 mm (2.9 inches) | 86% | moderate |
| April Weather | 10°C (50°F) | 37 mm (1.4 inches) | 85% | high |
| May Weather | 13°C (55°F) | 75 mm (3.0 inches) | 82% | high |
| June Weather | 17°C (62°F) | 72 mm (2.8 inches) | 81% | very high |
| July Weather | 18°C (65°F) | 49 mm (1.9 inches) | 76% | very high |
| August Weather | 18°C (65°F) | 77 mm (3.0 inches) | 73% | very high |
| September Weather | 15°C (60°F) | 59 mm (2.3 inches) | 80% | moderate |
| October Weather | 12°C (54°F) | 92 mm (3.6 inches) | 89% | moderate |
| November Weather | 8°C (47°F) | 75 mm (3.0 inches) | 92% | low |
| December Weather | 6°C (43°F) | 117 mm (4.6 inches) | 92% | low |