January Weather in Castricum, Netherlands

Last updated: August 27, 2025

In Castricum, Netherlands, the average temperature in January hovers around 5°C (42°F). During this time, you might experience lows of -4°C (26°F) and highs of 12°C (55°F). Expect a fair amount of rain as well, with 62 mm (2.4 in) of precipitation spread over 13 days. Additionally, the air tends to be quite moist, boasting an average humidity of 87%—perfect for cozy indoor activities!

January Temperature in Castricum

In January in Castricum, the average temperature is 5°C (42°F). The maximum can reach 12°C (55°F), while the minimum can be as low as -4°C (26°F). Travelers should prepare for chilly conditions and pack layers to stay comfortable during their visit.

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

The chart illustrates January temperature patterns in Castricum, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castricum, January typically has an average temperature of 5°C (42°F), with highs reaching up to 12°C (55°F) and lows dropping to around -4°C (26°F).

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

January Precipitation in Castricum

In Castricum in January, the precipitation amount is 62 mm (2.4 in) over the course of 13 days.

January Precipitation Trends in Castricum

The chart displays monthly precipitation patterns in Castricum, 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 Castricum, January typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 13 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 Castricum

In Castricum in January humidity is 87%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and travel less inviting as the air becomes heavy and oppressive.

January Average Humidity in Castricum

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

In Castricum 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 Castricum.

Maximum UV Index Levels in Castricum for January

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

Data source: Castricum 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 Castricum Compares to Other Months

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

This table compares monthly weather conditions in Castricum, 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 (42°F)	62 mm (2.4 inches)	87%	low
February Weather	5°C (42°F)	71 mm (2.8 inches)	87%	low
March Weather	7°C (44°F)	71 mm (2.8 inches)	86%	moderate
April Weather	9°C (49°F)	43 mm (1.7 inches)	85%	moderate
May Weather	12°C (55°F)	54 mm (2.1 inches)	84%	high
June Weather	17°C (62°F)	74 mm (2.9 inches)	81%	very high
July Weather	18°C (64°F)	73 mm (2.9 inches)	80%	very high
August Weather	18°C (65°F)	99 mm (3.9 inches)	78%	high
September Weather	16°C (60°F)	93 mm (3.7 inches)	83%	moderate
October Weather	13°C (55°F)	115 mm (4.5 inches)	86%	moderate
November Weather	9°C (48°F)	65 mm (2.6 inches)	87%	low
December Weather	6°C (44°F)	105 mm (4.1 inches)	86%	low