January Weather in Castrillo de Onielo, Spain

Last updated: August 27, 2025

In January, the average temperature in Castrillo de Onielo, Spain is 4°C (39°F), making it a cool yet pleasant time of the year. Expect minimum temperatures to dip as low as -7°C (19°F), while highs can reach up to 17°C (64°F). With an average precipitation of 34 mm (1.4 in) over approximately 5 days, and a high humidity level of 90%, it's advisable to come prepared for both crisp air and potential rain.

January Temperature in Castrillo de Onielo

In January in Castrillo de Onielo, the average temperature is 4°C (39°F). Maximum temperatures can reach 17°C (64°F), while minimums can drop as low as -7°C (19°F). Be prepared for a range of temperatures and pack accordingly for your travels.

January Weather in Castrillo de Onielo: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Castrillo de Onielo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castrillo de Onielo, January typically has an average temperature of 4°C (39°F), with highs reaching up to 17°C (64°F) and lows dropping to around -7°C (19°F).

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

January Precipitation in Castrillo de Onielo

In Castrillo de Onielo in January, the precipitation amount is 34 mm (1.4 in) spread over 5 days.

January Precipitation Trends in Castrillo de Onielo

The chart displays monthly precipitation patterns in Castrillo de Onielo, 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 Castrillo de Onielo, January typically receives around 34 mm (1.4 inches) of precipitation spread over approximately 5 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 Castrillo de Onielo

In Castrillo de Onielo in January humidity is 90%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and requiring extra layers to stay warm while navigating the misty streets.

January Average Humidity in Castrillo de Onielo

This chart illustrates the average monthly humidity levels in Castrillo de Onielo, 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 Castrillo de Onielo 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 Castrillo de Onielo

In Castrillo de Onielo in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Castrillo de Onielo, you can check the information here.

Maximum UV Index Levels in Castrillo de Onielo for January

The chart shows the monthly maximum UV Index (UVI) for Castrillo de Onielo 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 Castrillo de Onielo typically reaches 3, which falls under the moderate exposure category.

Data source: Castrillo de Onielo 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 Castrillo de Onielo Compares to Other Months

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

This table compares monthly weather conditions in Castrillo de Onielo, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	34 mm (1.4 inches)	90%	moderate
February Weather	7°C (44°F)	45 mm (1.8 inches)	86%	moderate
March Weather	8°C (47°F)	52 mm (2.0 inches)	79%	high
April Weather	11°C (52°F)	78 mm (3.1 inches)	74%	very high
May Weather	15°C (60°F)	53 mm (2.1 inches)	71%	very high
June Weather	19°C (67°F)	49 mm (1.9 inches)	63%	extreme
July Weather	23°C (73°F)	21 mm (0.8 inches)	59%	extreme
August Weather	22°C (72°F)	14 mm (0.5 inches)	58%	very high
September Weather	18°C (65°F)	32 mm (1.3 inches)	65%	very high
October Weather	13°C (56°F)	51 mm (2.0 inches)	77%	high
November Weather	8°C (46°F)	66 mm (2.6 inches)	87%	moderate
December Weather	6°C (42°F)	54 mm (2.1 inches)	90%	low