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December Weather in Challex, France

Last updated: August 23, 2025

In December, the average temperature in Challex, France hovers around 3°C (37°F). Expect chilly conditions, with temperatures dipping as low as -9°C (17°F) and peaking at a mild 13°C (56°F). This month brings significant precipitation, totaling 224 mm (8.8 in) over 18 days, and an impressive average humidity of 91%. Prepare for a wet and cool experience!

December Temperature in Challex

In December in Challex, the average temperature is 3°C (37°F). The maximum can reach 13°C (56°F) while the minimum can be as low as -9°C (17°F). Travelers should be prepared for chilly weather and pack accordingly for fluctuating temperatures.

December Weather in Challex: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Challex, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Challex, December typically has an average temperature of 3°C (37°F), with highs reaching up to 13°C (56°F) and lows dropping to around -9°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec353943505664676659514237
Data source: Temperature data for Challex 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 Challex

In Challex in December, the total precipitation amount reaches 224 mm (8.8 in) over a span of 18 days.

December Precipitation Trends in Challex

The chart displays monthly precipitation patterns in Challex, 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 Challex, December typically receives around 224 mm (8.8 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec1281011516417413011711983126121224
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Challex

In Challex in December, humidity is 91%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that seeps into your bones, making travel quite uncomfortable and requiring you to dress in layers to stay warm while battling the oppressive mugginess.

December Average Humidity in Challex

This chart illustrates the average monthly humidity levels in Challex, 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 Challex is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%84%80%82%82%77%81%89%89%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Challex

In Challex in December, 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 Challex, you can visit Hourly UV Index in Challex.

Maximum UV Index Levels in Challex for December

The chart shows the monthly maximum UV Index (UVI) for Challex 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 Challex typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2367810986532
Data source: Challex 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 Challex Compares to Other Months

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

This table compares monthly weather conditions in Challex, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)128 mm (5.0 inches)91%low
February Weather4°C (40°F)101 mm (4.0 inches)89%moderate
March Weather6°C (44°F)151 mm (5.9 inches)87%high
April Weather10°C (50°F)64 mm (2.5 inches)84%high
May Weather13°C (56°F)174 mm (6.8 inches)80%very high
June Weather18°C (64°F)130 mm (5.1 inches)82%very high
July Weather19°C (67°F)117 mm (4.6 inches)82%very high
August Weather19°C (67°F)119 mm (4.7 inches)77%very high
September Weather15°C (60°F)83 mm (3.3 inches)81%high
October Weather11°C (51°F)126 mm (5.0 inches)89%moderate
November Weather5°C (42°F)121 mm (4.7 inches)89%moderate
December Weather3°C (37°F)224 mm (8.8 inches)91%low

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