January Weather in Casillas, Spain

Last updated: August 27, 2025

In Casillas, Spain, the average temperature in January hovers around 5°C (40°F), with a precarious range that can dip to a minimum of -7°C (19°F) and soar to a maximum of 18°C (64°F). Expect about 30 mm (1.2 in) of precipitation spread over 5 days, contributing to a notably high average humidity of 90%. Prepare accordingly for a mix of chilly and damp weather!

January Temperature in Casillas

In January in Casillas, the average temperature is 5°C (40°F). Maximums can reach 18°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 Casillas: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Casillas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casillas, January typically has an average temperature of 5°C (40°F), with highs reaching up to 18°C (64°F) and lows dropping to around -7°C (19°F).

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

January Precipitation in Casillas

In Casillas in January, the precipitation amount is 30 mm (1.2 in) over the course of 5 days.

January Precipitation Trends in Casillas

The chart displays monthly precipitation patterns in Casillas, 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 Casillas, January typically receives around 30 mm (1.2 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 Casillas

In Casillas in January, humidity is 90%. With an average temperature of 5°C (40°F), this humidity feels like you're walking through a dense fog, making every step feel heavier and more challenging for traveling.

January Average Humidity in Casillas

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

In Casillas 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 Casillas, you can check the information here.

Maximum UV Index Levels in Casillas for January

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

Data source: Casillas 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 Casillas Compares to Other Months

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

This table compares monthly weather conditions in Casillas, 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 (40°F)	30 mm (1.2 inches)	90%	moderate
February Weather	8°C (46°F)	38 mm (1.5 inches)	86%	moderate
March Weather	9°C (49°F)	62 mm (2.4 inches)	79%	high
April Weather	12°C (54°F)	67 mm (2.6 inches)	74%	very high
May Weather	18°C (64°F)	32 mm (1.3 inches)	71%	very high
June Weather	22°C (72°F)	19 mm (0.8 inches)	63%	extreme
July Weather	26°C (79°F)	14 mm (0.6 inches)	59%	extreme
August Weather	26°C (78°F)	15 mm (0.6 inches)	58%	very high
September Weather	21°C (70°F)	37 mm (1.5 inches)	65%	very high
October Weather	15°C (60°F)	53 mm (2.1 inches)	77%	high
November Weather	9°C (49°F)	62 mm (2.5 inches)	87%	moderate
December Weather	7°C (44°F)	47 mm (1.9 inches)	90%	moderate