January Weather in Castrillon, Spain

Last updated: August 27, 2025

In January, the average temperature in Castrillon, Spain is a brisk 9°C (48°F). Expect a minimum of 0°C (33°F) and a cozy maximum of 19°C (66°F). Rain might grace the area with an average precipitation of 109 mm (4.3 in) over about 12 days, while the air remains relatively humid at 87%. Prepare for a month that blends cool temperatures with occasional showers!

January Temperature in Castrillon

In January in Castrillon, the average temperature is a mild 9°C (48°F), with maximums reaching up to 19°C (66°F) and minimums dipping as low as 0°C (33°F). This pleasant weather makes it a great time for travelers to explore the area comfortably.

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

The chart illustrates January temperature patterns in Castrillon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castrillon, January typically has an average temperature of 9°C (48°F), with highs reaching up to 19°C (66°F) and lows dropping to around 0°C (33°F).

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

January Precipitation in Castrillon

In Castrillon in January, the total precipitation amount is 109 mm (4.3 in) during a span of 12 days.

January Precipitation Trends in Castrillon

The chart displays monthly precipitation patterns in Castrillon, 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 Castrillon, January typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 12 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 Castrillon

In Castrillon in January humidity is 87%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers and careful planning for any activities.

January Average Humidity in Castrillon

This chart illustrates the average monthly humidity levels in Castrillon, 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 Castrillon is approximately 87%, 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 Castrillon

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

Maximum UV Index Levels in Castrillon for January

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

Data source: Castrillon 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 Castrillon Compares to Other Months

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

This table compares monthly weather conditions in Castrillon, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	109 mm (4.3 inches)	87%	low
February Weather	10°C (50°F)	113 mm (4.5 inches)	85%	moderate
March Weather	10°C (51°F)	96 mm (3.8 inches)	83%	moderate
April Weather	12°C (53°F)	98 mm (3.9 inches)	83%	high
May Weather	14°C (58°F)	106 mm (4.2 inches)	84%	very high
June Weather	16°C (62°F)	125 mm (4.9 inches)	84%	very high
July Weather	18°C (65°F)	78 mm (3.1 inches)	86%	very high
August Weather	19°C (66°F)	84 mm (3.3 inches)	78%	very high
September Weather	17°C (64°F)	90 mm (3.5 inches)	77%	high
October Weather	15°C (59°F)	125 mm (4.9 inches)	82%	moderate
November Weather	11°C (53°F)	179 mm (7.1 inches)	86%	moderate
December Weather	10°C (51°F)	186 mm (7.3 inches)	87%	low