Last updated: August 23, 2025
In December, the average temperature in Saint-Barthelemy, France is a cool 4°C (39°F). During this time, temperatures can dip as low as -4°C (25°F), while reaching a maximum of 14°C (57°F). Expect 187 mm (7.4 in) of precipitation spread over 19 days, contributing to an average humidity of 91%. Be prepared for a chilly and damp month!
In December in Saint-Barthelemy, the average temperature is 4°C (39°F), with maximums reaching up to 14°C (57°F) and minimums dropping as low as -4°C (25°F). Make sure to pack warm layers to stay comfortable while exploring the region!
In Saint-Barthelemy in December, the total precipitation amount is 187 mm (7.4 in) over the course of 19 days.
In Saint-Barthelemy 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 Saint-Barthelemy 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 Saint-Barthelemy.
UV Risk Categories
Weather in Saint-Barthelemy varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Saint-Barthelemy, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (36°F) | 132 mm (5.2 inches) | 91% | low |
| February Weather | 5°C (41°F) | 111 mm (4.4 inches) | 89% | moderate |
| March Weather | 7°C (45°F) | 123 mm (4.8 inches) | 87% | moderate |
| April Weather | 11°C (51°F) | 53 mm (2.1 inches) | 84% | high |
| May Weather | 14°C (57°F) | 119 mm (4.7 inches) | 80% | very high |
| June Weather | 19°C (67°F) | 85 mm (3.3 inches) | 82% | very high |
| July Weather | 21°C (69°F) | 64 mm (2.5 inches) | 82% | very high |
| August Weather | 20°C (69°F) | 46 mm (1.8 inches) | 77% | very high |
| September Weather | 16°C (61°F) | 59 mm (2.3 inches) | 81% | high |
| October Weather | 11°C (53°F) | 96 mm (3.8 inches) | 89% | moderate |
| November Weather | 6°C (43°F) | 96 mm (3.8 inches) | 89% | low |
| December Weather | 4°C (39°F) | 187 mm (7.4 inches) | 91% | low |