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December Weather in Saint-Cast-le-Guildo, France

Last updated: August 23, 2025

In December, the average temperature in Saint-Cast-le-Guildo, France hovers around 10°C (50°F), offering a mild climate perfect for exploration. Expect temperatures to range from a chilly 3°C (38°F) at night to a comfortable 14°C (58°F) during the day. With 159 mm (6.2 in) of precipitation spread over 20 days, don’t forget your umbrella! The air is quite humid, averaging around 92%, adding to the enchanting atmosphere of this vibrant location.

December Temperature in Saint-Cast-le-Guildo

In December in Saint-Cast-le-Guildo, the average temperature is 10°C (50°F). The maximum can reach up to 14°C (58°F), while the minimum can drop to as low as 3°C (38°F). This mild climate makes it a great time for travelers to explore the sights and enjoy outdoor activities.

December Weather in Saint-Cast-le-Guildo: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Saint-Cast-le-Guildo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Cast-le-Guildo, December typically has an average temperature of 10°C (50°F), with highs reaching up to 14°C (58°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec474748515560636463595350
Data source: Temperature data for Saint-Cast-le-Guildo 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.

December Precipitation in Saint-Cast-le-Guildo

In Saint-Cast-le-Guildo in December, the precipitation amount is 159 mm (6.2 in) over the course of 20 days.

December Precipitation Trends in Saint-Cast-le-Guildo

The chart displays monthly precipitation patterns in Saint-Cast-le-Guildo, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Saint-Cast-le-Guildo, December typically receives around 159 mm (6.2 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec858766396375435679139117159
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Saint-Cast-le-Guildo

In Saint-Cast-le-Guildo in December humidity is 92%. With an average temperature of 10°C (50°F), this humidity feels like a chilly, damp cloak wrapping around you, making every step outside feel heavy and each breath a bit more labored, turning exploring into an uncomfortable challenge.

December Average Humidity in Saint-Cast-le-Guildo

This chart illustrates the average monthly humidity levels in Saint-Cast-le-Guildo, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Saint-Cast-le-Guildo is approximately 92%, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Saint-Cast-le-Guildo

In Saint-Cast-le-Guildo in December, 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 Saint-Cast-le-Guildo.

Maximum UV Index Levels in Saint-Cast-le-Guildo for December

The chart shows the monthly maximum UV Index (UVI) for Saint-Cast-le-Guildo in December, 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 December, the maximum UV index in Saint-Cast-le-Guildo typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Saint-Cast-le-Guildo December 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 December Weather in Saint-Cast-le-Guildo Compares to Other Months

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

This table compares monthly weather conditions in Saint-Cast-le-Guildo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)85 mm (3.4 inches)90%low
February Weather8°C (47°F)87 mm (3.4 inches)89%moderate
March Weather9°C (49°F)66 mm (2.6 inches)86%moderate
April Weather10°C (51°F)39 mm (1.5 inches)84%high
May Weather13°C (55°F)63 mm (2.5 inches)80%very high
June Weather15°C (60°F)75 mm (3.0 inches)80%very high
July Weather17°C (64°F)43 mm (1.7 inches)69%very high
August Weather18°C (64°F)56 mm (2.2 inches)73%very high
September Weather17°C (63°F)79 mm (3.1 inches)79%high
October Weather15°C (59°F)139 mm (5.5 inches)89%moderate
November Weather11°C (53°F)117 mm (4.6 inches)92%low
December Weather10°C (50°F)159 mm (6.2 inches)92%low

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