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December Weather in Cwmann, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Cwmann, United Kingdom hovers around 6°C (43°F). Expect chilly nights with minimums dipping to -4°C (26°F), while daytime can bring a mild maximum of 12°C (55°F). Prepare for wet weather, as the region receives about 166 mm (6.5 in) of precipitation over 20 days, coupled with a high average humidity of 89%.

December Temperature in Cwmann

In December in Cwmann, the average temperature is 6°C (43°F), with maximums reaching up to 12°C (55°F) and minimums dropping as low as -4°C (26°F). This weather makes it essential to pack layers and prepare for chilly conditions when traveling to Cwmann during this time.

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

The chart illustrates December temperature patterns in Cwmann, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cwmann, December typically has an average temperature of 6°C (43°F), with highs reaching up to 12°C (55°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec414243475258615956514543
Data source: Temperature data for Cwmann 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 Cwmann

In Cwmann in December, the precipitation amount is 166 mm (6.5 in) over the course of 20 days.

December Precipitation Trends in Cwmann

The chart displays monthly precipitation patterns in Cwmann, 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 Cwmann, December typically receives around 166 mm (6.5 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec951401256699103101133110155132166
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cwmann

In Cwmann in December, humidity is 89%. With an average temperature of 6°C (43°F), this humidity feels like a chilly, damp embrace that can make outdoor activities uncomfortable and energy-draining, often leading travelers to seek shelter indoors or dress in layers to cope with the cold and moist air.

December Average Humidity in Cwmann

This chart illustrates the average monthly humidity levels in Cwmann, 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 Cwmann is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Cwmann

In Cwmann 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 Cwmann.

Maximum UV Index Levels in Cwmann for December

The chart shows the monthly maximum UV Index (UVI) for Cwmann 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 Cwmann typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Cwmann 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 Cwmann Compares to Other Months

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

This table compares monthly weather conditions in Cwmann, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)95 mm (3.7 inches)88%low
February Weather5°C (42°F)140 mm (5.5 inches)88%low
March Weather6°C (44°F)125 mm (4.9 inches)86%moderate
April Weather8°C (48°F)66 mm (2.6 inches)84%high
May Weather11°C (52°F)99 mm (3.9 inches)80%high
June Weather14°C (58°F)103 mm (4.1 inches)80%very high
July Weather16°C (61°F)101 mm (4.0 inches)70%very high
August Weather15°C (60°F)133 mm (5.2 inches)73%high
September Weather13°C (56°F)110 mm (4.3 inches)79%high
October Weather10°C (51°F)155 mm (6.1 inches)89%moderate
November Weather7°C (46°F)132 mm (5.2 inches)90%low
December Weather6°C (43°F)166 mm (6.5 inches)89%low

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