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January Weather in Saint-Lo, France

Last updated: August 23, 2025

In January, the average temperature in Saint-Lo, France hovers around 5°C (42°F), with extremes ranging from a chilly -7°C (19°F) to a mild 16°C (61°F). Expect 70 mm (2.7 in) of precipitation over approximately 11 days, accompanied by a high average humidity of 90%. Prepare for a brisk and damp month!

January Temperature in Saint-Lo

In January in Saint-Lo, the average temperature is 5°C (42°F). The maximum can reach 16°C (61°F) and the minimum can be as low as -7°C (19°F). Travelers should be prepared for chilly weather, with the possibility of some warmer days mixed in.

January Weather in Saint-Lo: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Saint-Lo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Lo, January typically has an average temperature of 5°C (42°F), with highs reaching up to 16°C (61°F) and lows dropping to around -7°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec424447515562656360544745
Data source: Temperature data for Saint-Lo generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Saint-Lo

In Saint-Lo in January, the precipitation amount is 70 mm (2.7 in) spread over 11 days.

January Precipitation Trends in Saint-Lo

The chart displays monthly precipitation patterns in Saint-Lo, 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 Saint-Lo, January typically receives around 70 mm (2.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec70778048859459665810384126
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Saint-Lo

In Saint-Lo in January, humidity is 90%. With an average temperature of 5°C (42°F), this humidity feels like a chilling dampness that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable.

January Average Humidity in Saint-Lo

This chart illustrates the average monthly humidity levels in Saint-Lo, 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 Saint-Lo is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%86%85%80%80%69%73%79%89%92%92%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Saint-Lo

In Saint-Lo 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 Saint-Lo, you can visit Hourly UV Index in Saint-Lo.

Maximum UV Index Levels in Saint-Lo for January

The chart shows the monthly maximum UV Index (UVI) for Saint-Lo 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 Saint-Lo typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234679886421
Data source: Saint-Lo 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 Saint-Lo Compares to Other Months

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

This table compares monthly weather conditions in Saint-Lo, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)70 mm (2.7 inches)90%low
February Weather7°C (44°F)77 mm (3.0 inches)89%moderate
March Weather8°C (47°F)79 mm (3.1 inches)86%moderate
April Weather10°C (51°F)48 mm (1.9 inches)84%high
May Weather13°C (56°F)85 mm (3.4 inches)80%high
June Weather16°C (62°F)94 mm (3.7 inches)80%very high
July Weather18°C (65°F)59 mm (2.3 inches)69%very high
August Weather17°C (64°F)66 mm (2.6 inches)73%very high
September Weather15°C (60°F)58 mm (2.3 inches)79%high
October Weather12°C (55°F)103 mm (4.0 inches)89%moderate
November Weather8°C (47°F)84 mm (3.3 inches)92%low
December Weather7°C (45°F)126 mm (5.0 inches)92%low

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