January Weather in Katwijk aan den Rijn, Netherlands

Last updated: August 27, 2025

In January, the average temperature in Katwijk aan den Rijn, Netherlands hovers around 5°C (42°F). Expect cool conditions with minimums dipping to -4°C (25°F) and highs reaching 13°C (55°F). The weather can be quite damp, with an average precipitation of 66 mm (2.6 in) spread over 14 days. Additionally, humidity levels are notably high at 87%, making it feel even chillier.

January Temperature in Katwijk aan den Rijn

In January in Katwijk aan den Rijn, the average temperature is 5°C (42°F), with maximums reaching up to 13°C (55°F) and minimums plummeting as low as -4°C (25°F). It’s advisable to pack warm clothing and be prepared for chilly weather when traveling during this time.

January Weather in Katwijk aan den Rijn: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Katwijk aan den Rijn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Katwijk aan den Rijn, January typically has an average temperature of 5°C (42°F), with highs reaching up to 13°C (55°F) and lows dropping to around -4°C (25°F).

Data source: Temperature data for Katwijk aan den Rijn generated using information from the Copernicus Climate Change Service.

January Precipitation in Katwijk aan den Rijn

In Katwijk aan den Rijn in January, the precipitation amount is 66 mm (2.6 in) spread over a duration of 14 days.

January Precipitation Trends in Katwijk aan den Rijn

The chart displays monthly precipitation patterns in Katwijk aan den Rijn, 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 Katwijk aan den Rijn, January typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 14 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 Katwijk aan den Rijn

In Katwijk aan den Rijn 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 Katwijk aan den Rijn

This chart illustrates the average monthly humidity levels in Katwijk aan den Rijn, 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 Katwijk aan den Rijn 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 Katwijk aan den Rijn

In Katwijk aan den Rijn 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 Katwijk aan den Rijn.

Maximum UV Index Levels in Katwijk aan den Rijn for January

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

Data source: Katwijk aan den Rijn 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 Katwijk aan den Rijn Compares to Other Months

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

This table compares monthly weather conditions in Katwijk aan den Rijn, 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)	66 mm (2.6 inches)	87%	low
February Weather	5°C (42°F)	72 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	13°C (55°F)	58 mm (2.3 inches)	84%	high
June Weather	17°C (62°F)	70 mm (2.8 inches)	81%	very high
July Weather	18°C (65°F)	68 mm (2.7 inches)	80%	very high
August Weather	19°C (66°F)	95 mm (3.7 inches)	78%	high
September Weather	16°C (61°F)	96 mm (3.8 inches)	83%	moderate
October Weather	13°C (56°F)	120 mm (4.7 inches)	86%	moderate
November Weather	9°C (48°F)	70 mm (2.8 inches)	87%	low
December Weather	6°C (44°F)	110 mm (4.3 inches)	86%	low