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December Weather in Biache-Saint-Vaast, France

Last updated: August 23, 2025

In December, the average temperature in Biache-Saint-Vaast, France hovers around 6°C (43°F), with a minimum dipping to -3°C (26°F) and a maximum reaching 15°C (59°F). Expect 95 mm (3.7 in) of precipitation spread over approximately 16 days, contributing to a high average humidity of 92%. Be prepared for cool and damp conditions!

December Temperature in Biache-Saint-Vaast

In December in Biache-Saint-Vaast, the average temperature is 6°C (43°F). Maximums can reach 15°C (59°F), while minimums can dip as low as -3°C (26°F). Be sure to pack layers to stay comfortable during your travels!

December Weather in Biache-Saint-Vaast: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Biache-Saint-Vaast, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Biache-Saint-Vaast, December typically has an average temperature of 6°C (43°F), with highs reaching up to 15°C (59°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec394246505664666660544642
Data source: Temperature data for Biache-Saint-Vaast 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 Biache-Saint-Vaast

In Biache-Saint-Vaast in December, the precipitation amount is 95 mm (3.7 in) spread over 16 days.

December Precipitation Trends in Biache-Saint-Vaast

The chart displays monthly precipitation patterns in Biache-Saint-Vaast, 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 Biache-Saint-Vaast, December typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec596265366364527549806395
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Biache-Saint-Vaast

In Biache-Saint-Vaast in December humidity is 92%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps through your clothes, making outdoor activities uncomfortable and requiring extra layers for warmth while navigating the slick streets.

December Average Humidity in Biache-Saint-Vaast

This chart illustrates the average monthly humidity levels in Biache-Saint-Vaast, 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 Biache-Saint-Vaast is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%85%82%82%80%76%82%89%92%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Biache-Saint-Vaast

In Biache-Saint-Vaast 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 Biache-Saint-Vaast.

Maximum UV Index Levels in Biache-Saint-Vaast for December

The chart shows the monthly maximum UV Index (UVI) for Biache-Saint-Vaast 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 Biache-Saint-Vaast typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224678875421
Data source: Biache-Saint-Vaast 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 Biache-Saint-Vaast Compares to Other Months

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

This table compares monthly weather conditions in Biache-Saint-Vaast, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)59 mm (2.3 inches)91%low
February Weather6°C (42°F)62 mm (2.4 inches)89%low
March Weather8°C (46°F)65 mm (2.6 inches)87%moderate
April Weather10°C (50°F)36 mm (1.4 inches)85%high
May Weather13°C (56°F)63 mm (2.5 inches)82%high
June Weather18°C (64°F)64 mm (2.5 inches)82%very high
July Weather19°C (66°F)52 mm (2.0 inches)80%very high
August Weather19°C (66°F)75 mm (2.9 inches)76%high
September Weather16°C (61°F)49 mm (1.9 inches)82%moderate
October Weather12°C (55°F)80 mm (3.1 inches)89%moderate
November Weather8°C (46°F)62 mm (2.5 inches)92%low
December Weather6°C (43°F)95 mm (3.7 inches)92%low

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