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December Weather in Sidcup, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Sidcup, United Kingdom hovers around 6°C (44°F), with a minimum of -4°C (25°F) and a maximum of 14°C (58°F). Expect a fair amount of precipitation, with around 84 mm (3.3 in) spread over 14 days, and the air feels quite humid with an average humidity of 92%.

December Temperature in Sidcup

In December in Sidcup, the average temperature is 6°C (44°F), with maximums reaching 14°C (58°F) and minimums dipping as low as -4°C (25°F). It's essential to pack layers to stay comfortable while exploring the area during this time.

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

The chart illustrates December temperature patterns in Sidcup, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sidcup, December typically has an average temperature of 6°C (44°F), with highs reaching up to 14°C (58°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec414346495562656459544643
Data source: Temperature data for Sidcup 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 Sidcup

In Sidcup in December, the precipitation amount is 84 mm (3.3 in) over the course of 14 days.

December Precipitation Trends in Sidcup

The chart displays monthly precipitation patterns in Sidcup, 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 Sidcup, December typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec545253326377647245814884
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sidcup

In Sidcup in December, humidity is 92%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that clings to your skin, making outdoor explorations uncomfortable and leaving you longing for warmer, drier conditions.

December Average Humidity in Sidcup

This chart illustrates the average monthly humidity levels in Sidcup, 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 Sidcup is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%82%81%76%73%80%89%92%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sidcup

In Sidcup 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 Sidcup.

Maximum UV Index Levels in Sidcup for December

The chart shows the monthly maximum UV Index (UVI) for Sidcup 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 Sidcup typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Sidcup 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 Sidcup Compares to Other Months

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

This table compares monthly weather conditions in Sidcup, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)54 mm (2.1 inches)91%low
February Weather6°C (43°F)52 mm (2.0 inches)89%low
March Weather8°C (46°F)52 mm (2.1 inches)86%moderate
April Weather10°C (49°F)32 mm (1.3 inches)85%moderate
May Weather13°C (55°F)63 mm (2.5 inches)82%high
June Weather17°C (62°F)77 mm (3.0 inches)81%very high
July Weather18°C (65°F)64 mm (2.5 inches)76%very high
August Weather18°C (64°F)72 mm (2.8 inches)73%high
September Weather15°C (60°F)45 mm (1.8 inches)80%high
October Weather12°C (54°F)81 mm (3.2 inches)89%moderate
November Weather8°C (47°F)48 mm (1.9 inches)92%low
December Weather6°C (44°F)84 mm (3.3 inches)92%low

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