Last updated: August 23, 2025
In December, the average temperature in Isle, France hovers around 6°C (42°F). Be prepared for chilly days, as temperatures can drop to a minimum of -4°C (25°F) and occasionally reach a maximum of 15°C (59°F). With an average precipitation amount of 155 mm (6.1 in) spread across 17 days, and a soaring average humidity of 92%, it’s wise to pack your umbrella and dress warmly!
In December in Isle, the average temperature is 6°C (42°F). The maximum can reach 15°C (59°F), while the minimum can drop as low as -4°C (25°F). Be prepared for a varied climate if you plan to travel during this time.
In Isle in December, the precipitation amount is 155 mm (6.1 in) over the course of 17 days.
In Isle in December humidity is 92%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that clings to your skin, making outdoor adventures feel more challenging and less inviting as the frigid air, combined with the heavy moisture, weighs down your spirits and leaves you yearning for warmth.
In Isle 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 Isle, you can visit Hourly UV Index in Isle.
UV Risk Categories
Weather in Isle varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Isle, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 86 mm (3.4 inches) | 90% | low |
| February Weather | 6°C (44°F) | 85 mm (3.4 inches) | 87% | moderate |
| March Weather | 8°C (47°F) | 102 mm (4.0 inches) | 85% | moderate |
| April Weather | 11°C (52°F) | 71 mm (2.8 inches) | 84% | high |
| May Weather | 14°C (58°F) | 116 mm (4.6 inches) | 84% | very high |
| June Weather | 18°C (65°F) | 106 mm (4.2 inches) | 82% | very high |
| July Weather | 20°C (69°F) | 61 mm (2.4 inches) | 79% | very high |
| August Weather | 20°C (68°F) | 60 mm (2.4 inches) | 75% | very high |
| September Weather | 17°C (62°F) | 75 mm (2.9 inches) | 79% | high |
| October Weather | 12°C (55°F) | 96 mm (3.8 inches) | 86% | moderate |
| November Weather | 8°C (46°F) | 94 mm (3.7 inches) | 90% | moderate |
| December Weather | 6°C (42°F) | 155 mm (6.1 inches) | 92% | low |