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August Weather in Saint-Lo, France

Last updated: August 23, 2025

In Saint-Lo, France, the average temperature in August hovers around 17°C (64°F), with lows of 7°C (44°F) and highs reaching up to 35°C (95°F). Expect 66 mm (2.6 in) of precipitation spread over 13 days, and enjoy an average humidity level of 73%. Ideal for those who appreciate a mild, somewhat humid climate!

August Temperature in Saint-Lo

In August in Saint-Lo, the average temperature is 17°C (64°F), with maximums reaching 35°C (95°F) and minimums dipping as low as 7°C (44°F). This pleasant range makes it an ideal time for travelers seeking comfortable weather and outdoor adventures.

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

The chart illustrates August 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, August typically has an average temperature of 17°C (64°F), with highs reaching up to 35°C (95°F) and lows dropping to around 7°C (44°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.

August Precipitation in Saint-Lo

In Saint-Lo in August, the total precipitation amount is 66 mm (2.6 in) spread over the course of 13 days.

August Precipitation Trends in Saint-Lo

The chart displays monthly precipitation patterns in Saint-Lo, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Saint-Lo, August typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec70778048859459665810384126
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Saint-Lo

In Saint-Lo in August, humidity is 73%. With an average temperature of 17°C (64°F), this humidity feels like a warm embrace, making it quite muggy for traveling, where the air can feel thick and sticky, causing a sense of discomfort as you explore the local sights.

August Average Humidity in Saint-Lo

This chart illustrates the average monthly humidity levels in Saint-Lo, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Saint-Lo is approximately 73%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Saint-Lo

In Saint-Lo in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Saint-Lo.

Maximum UV Index Levels in Saint-Lo for August

The chart shows the monthly maximum UV Index (UVI) for Saint-Lo in August, 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 August, the maximum UV index in Saint-Lo typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234679886421
Data source: Saint-Lo August 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 August 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 August’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 August’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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