Last updated: August 23, 2025
In January, the average temperature in Courtois-sur-Yonne, France is a brisk 4°C (40°F), with a minimum dipping as low as -8°C (18°F) and a maximum reaching up to 15°C (59°F). Prepare for some wet days, as precipitation averages 76 mm (3.0 in) spread over 12 days. With an average humidity of 91%, it's a good idea to bring along a cozy sweater and an umbrella!
In January in Courtois-sur-Yonne, the average temperature is 4°C (40°F), with maximums reaching up to 15°C (59°F) and minimums dropping as low as -8°C (18°F). It's advisable to pack warm clothing and be prepared for chilly conditions if you're planning to travel during this time.
In Courtois-sur-Yonne in January, the total precipitation amount is 76 mm (3.0 in), occurring over the course of 12 days.
In Courtois-sur-Yonne in January, humidity is 91%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor travel uncomfortable and necessitating extra layers for warmth.
In Courtois-sur-Yonne in January, 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 Courtois-sur-Yonne, you can visit Hourly UV Index in Courtois-sur-Yonne.
UV Risk Categories
Weather in Courtois-sur-Yonne varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Courtois-sur-Yonne, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 76 mm (3.0 inches) | 91% | low |
| February Weather | 6°C (43°F) | 69 mm (2.7 inches) | 89% | moderate |
| March Weather | 8°C (47°F) | 77 mm (3.1 inches) | 86% | moderate |
| April Weather | 11°C (52°F) | 33 mm (1.3 inches) | 84% | high |
| May Weather | 15°C (58°F) | 81 mm (3.2 inches) | 82% | very high |
| June Weather | 19°C (67°F) | 71 mm (2.8 inches) | 82% | very high |
| July Weather | 21°C (70°F) | 56 mm (2.2 inches) | 80% | very high |
| August Weather | 20°C (69°F) | 51 mm (2.0 inches) | 76% | very high |
| September Weather | 17°C (63°F) | 55 mm (2.2 inches) | 81% | high |
| October Weather | 13°C (55°F) | 84 mm (3.3 inches) | 88% | moderate |
| November Weather | 7°C (46°F) | 66 mm (2.6 inches) | 92% | low |
| December Weather | 6°C (43°F) | 114 mm (4.5 inches) | 93% | low |