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December Weather in Cwmafan, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Cwmafan, United Kingdom hovers around 8°C (46°F), with a range that can dip as low as -1°C (30°F) and rise to a comfortable 13°C (55°F). Expect a fair amount of rain, with 159 mm (6.3 in) of precipitation spread over 19 days. The air tends to feel quite humid, with an average humidity of 89%.

December Temperature in Cwmafan

In December in Cwmafan, the average temperature is 8°C (46°F), with maximums reaching 13°C (55°F) and minimums dropping as low as -1°C (30°F). It's advisable to pack warm layers and a weatherproof jacket for your travels.

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

The chart illustrates December temperature patterns in Cwmafan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cwmafan, December typically has an average temperature of 8°C (46°F), with highs reaching up to 13°C (55°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec434445495359626159544846
Data source: Temperature data for Cwmafan 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 Cwmafan

In Cwmafan in December, the precipitation amount is 159 mm (6.3 in) and falls over a span of 19 days.

December Precipitation Trends in Cwmafan

The chart displays monthly precipitation patterns in Cwmafan, 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 Cwmafan, December typically receives around 159 mm (6.3 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec9311710355798583111103155122159
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cwmafan

In Cwmafan in December humidity is 89%. With an average temperature of 8°C (46°F), this humidity feels like a chilly dampness that clings to your skin, making travel uncomfortable and necessitating extra layers to stay warm while you navigate the wet conditions.

December Average Humidity in Cwmafan

This chart illustrates the average monthly humidity levels in Cwmafan, 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 Cwmafan 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 Cwmafan

In Cwmafan 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 Cwmafan.

Maximum UV Index Levels in Cwmafan for December

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

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

This table compares monthly weather conditions in Cwmafan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)93 mm (3.6 inches)88%low
February Weather7°C (44°F)117 mm (4.6 inches)88%low
March Weather7°C (45°F)103 mm (4.1 inches)86%moderate
April Weather9°C (49°F)55 mm (2.2 inches)84%high
May Weather12°C (54°F)78 mm (3.1 inches)80%high
June Weather15°C (59°F)84 mm (3.3 inches)80%very high
July Weather17°C (63°F)83 mm (3.3 inches)70%very high
August Weather16°C (62°F)111 mm (4.4 inches)73%high
September Weather15°C (59°F)103 mm (4.1 inches)79%high
October Weather12°C (54°F)155 mm (6.1 inches)89%moderate
November Weather9°C (48°F)122 mm (4.8 inches)90%low
December Weather8°C (46°F)159 mm (6.3 inches)89%low

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