January Weather in Castor, United Kingdom

Last updated: August 27, 2025

In Castor, United Kingdom, the average temperature in January hovers around 5°C (41°F). Expect a chilly minimum of -4°C (24°F) and a pleasant maximum of 15°C (59°F). During this month, you can anticipate approximately 47 mm (1.9 in) of precipitation spread over 10 days. With an average humidity of 90%, it's a great time to bundle up and enjoy the cozy atmosphere!

January Temperature in Castor

In January in Castor, the average temperature is 5°C (41°F), with maximums reaching 15°C (59°F) and minimums dropping as low as -4°C (24°F). This weather makes it advisable to pack layers and be prepared for chilly conditions while exploring the area.

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

The chart illustrates January temperature patterns in Castor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castor, January typically has an average temperature of 5°C (41°F), with highs reaching up to 15°C (59°F) and lows dropping to around -4°C (24°F).

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

January Precipitation in Castor

In Castor in January, the precipitation amount is 47 mm (1.9 in) over a span of 10 days.

January Precipitation Trends in Castor

The chart displays monthly precipitation patterns in Castor, 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 Castor, January typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Castor

In Castor 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 Castor

This chart illustrates the average monthly humidity levels in Castor, 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 Castor 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 Castor

In Castor in January, 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 Castor.

Maximum UV Index Levels in Castor for January

The chart shows the monthly maximum UV Index (UVI) for Castor 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 Castor typically reaches 1, which falls under the low exposure category.

Data source: Castor 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 Castor Compares to Other Months

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

This table compares monthly weather conditions in Castor, 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)	47 mm (1.9 inches)	90%	low
February Weather	6°C (43°F)	48 mm (1.9 inches)	88%	low
March Weather	7°C (45°F)	56 mm (2.2 inches)	86%	moderate
April Weather	9°C (49°F)	37 mm (1.4 inches)	84%	moderate
May Weather	13°C (55°F)	64 mm (2.5 inches)	80%	high
June Weather	16°C (61°F)	73 mm (2.9 inches)	81%	very high
July Weather	18°C (65°F)	70 mm (2.8 inches)	76%	very high
August Weather	18°C (64°F)	74 mm (2.9 inches)	77%	high
September Weather	15°C (59°F)	56 mm (2.2 inches)	85%	moderate
October Weather	12°C (53°F)	77 mm (3.0 inches)	90%	moderate
November Weather	8°C (46°F)	51 mm (2.0 inches)	92%	low
December Weather	6°C (43°F)	77 mm (3.0 inches)	90%	low