January Weather in Castries, France

Last updated: August 23, 2025

In January, the average temperature in Castries, France is a cool 7°C (44°F). During this month, temperatures can dip as low as -4°C (24°F) or rise to a pleasant 18°C (65°F). Expect about 63 mm (2.5 in) of precipitation over 7 days. Additionally, the average humidity is a high 82%, contributing to a distinctly refreshing atmosphere.

January Temperature in Castries

In January in Castries, the average temperature is 7°C (44°F), with maximums reaching 18°C (65°F) and minimums dropping as low as -4°C (24°F). It's essential to pack layers to ensure comfort, as temperatures can vary significantly throughout the day.

January Weather in Castries: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Castries, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castries, January typically has an average temperature of 7°C (44°F), with highs reaching up to 18°C (65°F) and lows dropping to around -4°C (24°F).

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

January Precipitation in Castries

In Castries in January, the precipitation amount is 63 mm (2.5 in) over a span of 7 days.

January Precipitation Trends in Castries

The chart displays monthly precipitation patterns in Castries, 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 Castries, January typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 7 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 Castries

In Castries in January, humidity is 82%. With an average temperature of 7°C (44°F), this humidity feels like an unwelcoming chill that seeps into your bones, making outdoor exploration feel damp and cumbersome.

January Average Humidity in Castries

This chart illustrates the average monthly humidity levels in Castries, 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 Castries is approximately 82%, 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 Castries

In Castries 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 Castries, you can visit Hourly UV Index in Castries.

Maximum UV Index Levels in Castries for January

The chart shows the monthly maximum UV Index (UVI) for Castries 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 Castries typically reaches 2, which falls under the low exposure category.

Data source: Castries 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 Castries Compares to Other Months

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

This table compares monthly weather conditions in Castries, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	63 mm (2.5 inches)	82%	low
February Weather	9°C (49°F)	46 mm (1.8 inches)	77%	moderate
March Weather	11°C (52°F)	78 mm (3.1 inches)	73%	moderate
April Weather	13°C (57°F)	84 mm (3.3 inches)	73%	high
May Weather	18°C (64°F)	73 mm (2.9 inches)	71%	very high
June Weather	22°C (73°F)	44 mm (1.7 inches)	67%	very high
July Weather	25°C (78°F)	22 mm (0.9 inches)	66%	very high
August Weather	25°C (77°F)	43 mm (1.7 inches)	63%	very high
September Weather	21°C (69°F)	60 mm (2.3 inches)	70%	high
October Weather	16°C (61°F)	121 mm (4.8 inches)	80%	moderate
November Weather	11°C (52°F)	143 mm (5.6 inches)	84%	moderate
December Weather	8°C (46°F)	61 mm (2.4 inches)	83%	low