January Weather in Saint-Sebastien, France

Last updated: August 23, 2025

In January, the average temperature in Saint-Sebastien, France hovers around 5°C (41°F). Expect chilly nights with minimums dropping to -6°C (21°F), while the days can warm up to a pleasant 17°C (63°F). Be prepared for a bit of rain, as 71 mm (2.8 in) of precipitation is expected over 12 days, coupled with a high average humidity of 90%.

January Temperature in Saint-Sebastien

In January in Saint-Sebastien, the average temperature is 5°C (41°F), with maximums reaching 17°C (63°F) and minimums dropping as low as -6°C (21°F). Be sure to pack accordingly for varied weather conditions during your travels.

January Weather in Saint-Sebastien: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Saint-Sebastien, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Sebastien, January typically has an average temperature of 5°C (41°F), with highs reaching up to 17°C (63°F) and lows dropping to around -6°C (21°F).

Data source: Temperature data for Saint-Sebastien generated using information from the Copernicus Climate Change Service.

January Precipitation in Saint-Sebastien

In Saint-Sebastien in January, the precipitation amount is 71 mm (2.8 in) during a total of 12 days.

January Precipitation Trends in Saint-Sebastien

The chart displays monthly precipitation patterns in Saint-Sebastien, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Saint-Sebastien, January typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Saint-Sebastien

In Saint-Sebastien in January, humidity is 90%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that clings to your skin, making travel feel more strenuous as you navigate the cold air mixed with moisture, potentially leaving you feeling sluggish and uncomfortable.

January Average Humidity in Saint-Sebastien

This chart illustrates the average monthly humidity levels in Saint-Sebastien, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Saint-Sebastien is approximately 90%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Saint-Sebastien

In Saint-Sebastien 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 Saint-Sebastien, you can visit Hourly UV Index in Saint-Sebastien.

Maximum UV Index Levels in Saint-Sebastien for January

The chart shows the monthly maximum UV Index (UVI) for Saint-Sebastien in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Saint-Sebastien typically reaches 2, which falls under the low exposure category.

Data source: Saint-Sebastien January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Saint-Sebastien Compares to Other Months

Weather in Saint-Sebastien varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Saint-Sebastien, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Saint-Sebastien, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	71 mm (2.8 inches)	90%	low
February Weather	7°C (45°F)	70 mm (2.8 inches)	88%	moderate
March Weather	9°C (48°F)	78 mm (3.1 inches)	85%	moderate
April Weather	12°C (53°F)	59 mm (2.3 inches)	83%	high
May Weather	15°C (59°F)	86 mm (3.4 inches)	83%	very high
June Weather	19°C (67°F)	76 mm (3.0 inches)	79%	very high
July Weather	21°C (71°F)	44 mm (1.7 inches)	71%	very high
August Weather	21°C (70°F)	36 mm (1.4 inches)	68%	very high
September Weather	17°C (64°F)	52 mm (2.0 inches)	76%	high
October Weather	13°C (56°F)	72 mm (2.8 inches)	87%	moderate
November Weather	8°C (47°F)	70 mm (2.7 inches)	91%	moderate
December Weather	7°C (44°F)	118 mm (4.6 inches)	93%	low