January Weather in Le Port-Marly, France

Last updated: August 23, 2025

In January, the average temperature in Le Port-Marly, France hovers around 5°C (40°F). Expect chilly nights as temperatures can dip to a brisk -7°C (20°F), while the day may warm up to a pleasant 15°C (58°F). Precipitation is moderate, with 54 mm (2.1 in) falling over approximately 10 days, and the air often feels quite damp with an average humidity of 91%. Whether you're layering up or braving the drizzle, be prepared for a true taste of the season!

January Temperature in Le Port-Marly

In January in Le Port-Marly, the average temperature is 5°C (40°F). Maximums can reach 15°C (58°F), while minimums can drop to as low as -7°C (20°F). Be prepared for a mix of chilly and milder days if you're planning to travel during this time.

January Weather in Le Port-Marly: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Le Port-Marly, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Le Port-Marly, January typically has an average temperature of 5°C (40°F), with highs reaching up to 15°C (58°F) and lows dropping to around -7°C (20°F).

Data source: Temperature data for Le Port-Marly generated using information from the Copernicus Climate Change Service.

January Precipitation in Le Port-Marly

In Le Port-Marly in January, the total precipitation amount is 54 mm (2.1 in) over the course of 10 days.

January Precipitation Trends in Le Port-Marly

The chart displays monthly precipitation patterns in Le Port-Marly, 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 Le Port-Marly, January typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 10 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 Le Port-Marly

In Le Port-Marly in January humidity is 91%. With an average temperature of 5°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and necessitating warm, layered clothing to stay comfortable while exploring.

January Average Humidity in Le Port-Marly

This chart illustrates the average monthly humidity levels in Le Port-Marly, 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 Le Port-Marly is approximately 91%, 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 Le Port-Marly

In Le Port-Marly in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Le Port-Marly, you can visit Hourly UV Index in Le Port-Marly.

Maximum UV Index Levels in Le Port-Marly for January

The chart shows the monthly maximum UV Index (UVI) for Le Port-Marly 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 Le Port-Marly typically reaches 2, which falls under the low exposure category.

Data source: Le Port-Marly 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 Le Port-Marly Compares to Other Months

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

This table compares monthly weather conditions in Le Port-Marly, 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)	54 mm (2.1 inches)	91%	low
February Weather	6°C (43°F)	67 mm (2.6 inches)	89%	moderate
March Weather	8°C (47°F)	76 mm (3.0 inches)	85%	moderate
April Weather	11°C (52°F)	36 mm (1.4 inches)	84%	high
May Weather	14°C (57°F)	73 mm (2.9 inches)	82%	very high
June Weather	18°C (65°F)	79 mm (3.1 inches)	80%	very high
July Weather	20°C (68°F)	47 mm (1.8 inches)	73%	very high
August Weather	19°C (67°F)	58 mm (2.3 inches)	68%	very high
September Weather	16°C (62°F)	41 mm (1.6 inches)	76%	high
October Weather	13°C (55°F)	77 mm (3.0 inches)	88%	moderate
November Weather	8°C (46°F)	65 mm (2.6 inches)	92%	low
December Weather	6°C (43°F)	101 mm (4.0 inches)	93%	low