January Weather in Rotterdam, United States

Last updated: June 24, 2025

In Rotterdam, United States, the average temperature in January hovers around -3°C (26°F), with lows plummeting to -24°C (-11°F) and highs reaching a surprising 17°C (63°F). Expect 73 mm (2.9 in) of precipitation spread over 9 days, contributing to an average humidity of 89%. 🥶🌧️

January Temperature in Rotterdam

In January in Rotterdam, the average temperature is -3°C (26°F). Maximum temperatures can reach 17°C (63°F), while the minimum can drop as low as -24°C (-11°F). It's advisable to pack layers and prepare for a wide range of temperatures if you're planning to travel during this time.

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

The chart illustrates January temperature patterns in Rotterdam, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rotterdam, January typically has an average temperature of -3°C (26°F), with highs reaching up to 17°C (63°F) and lows dropping to around -24°C (-11°F).

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

January Precipitation in Rotterdam

In Rotterdam in January, the precipitation amount is 73 mm (2.9 in), occurring over the course of 9 days.

January Precipitation Trends in Rotterdam

The chart displays monthly precipitation patterns in Rotterdam, 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 Rotterdam, January typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 9 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 Rotterdam

In Rotterdam in January, humidity is 89%. With an average temperature of -3°C (26°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and requiring layered clothing to stay warm as you explore.

January Average Humidity in Rotterdam

This chart illustrates the average monthly humidity levels in Rotterdam, 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 Rotterdam is approximately 89%, 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 Rotterdam

In Rotterdam 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 Rotterdam, you can check the information here.

Maximum UV Index Levels in Rotterdam for January

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

Data source: Rotterdam 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 Rotterdam Compares to Other Months

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

This table compares monthly weather conditions in Rotterdam, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	73 mm (2.9 inches)	89%	moderate
February Weather	-2°C (29°F)	92 mm (3.6 inches)	88%	moderate
March Weather	2°C (35°F)	81 mm (3.2 inches)	86%	high
April Weather	8°C (47°F)	131 mm (5.2 inches)	84%	very high
May Weather	15°C (59°F)	106 mm (4.2 inches)	76%	very high
June Weather	20°C (68°F)	117 mm (4.6 inches)	72%	very high
July Weather	23°C (73°F)	152 mm (6.0 inches)	66%	very high
August Weather	22°C (71°F)	125 mm (4.9 inches)	64%	very high
September Weather	18°C (64°F)	109 mm (4.3 inches)	72%	high
October Weather	12°C (53°F)	148 mm (5.8 inches)	81%	high
November Weather	4°C (39°F)	96 mm (3.8 inches)	87%	moderate
December Weather	-1°C (31°F)	96 mm (3.8 inches)	84%	low