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December Weather in Heol-y-Cyw, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Heol-y-Cyw, United Kingdom hovers around 7°C (45°F). Expect chilly days, with a minimum of -2°C (29°F) and a maximum reaching 13°C (55°F). This month brings about 144 mm (5.7 in) of precipitation over approximately 18 days, resulting in a high humidity of 89%. Prepare for a wet and cool experience!

December Temperature in Heol-y-Cyw

In December in Heol-y-Cyw, the average temperature is 7°C (45°F), with maximums reaching 13°C (55°F) and minimums dropping as low as -2°C (29°F). Travelers should be prepared for cool weather and varying temperatures during this time.

December Weather in Heol-y-Cyw: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Heol-y-Cyw, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heol-y-Cyw, December typically has an average temperature of 7°C (45°F), with highs reaching up to 13°C (55°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec434345495459636258544845
Data source: Temperature data for Heol-y-Cyw 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 Heol-y-Cyw

In Heol-y-Cyw in December, the precipitation amount is 144 mm (5.7 in) over the course of 18 days.

December Precipitation Trends in Heol-y-Cyw

The chart displays monthly precipitation patterns in Heol-y-Cyw, 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 Heol-y-Cyw, December typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec831111015780858610693146111144
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Heol-y-Cyw

In Heol-y-Cyw in December, humidity is 89%. With an average temperature of 7°C (45°F), this humidity feels like stepping into a damp cloud, making traveling quite uncomfortable as the moisture clings to your skin and clothes, turning even mild activity into a sweaty ordeal.

December Average Humidity in Heol-y-Cyw

This chart illustrates the average monthly humidity levels in Heol-y-Cyw, 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 Heol-y-Cyw 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 Heol-y-Cyw

In Heol-y-Cyw 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 Heol-y-Cyw.

Maximum UV Index Levels in Heol-y-Cyw for December

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

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

This table compares monthly weather conditions in Heol-y-Cyw, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)83 mm (3.3 inches)88%low
February Weather6°C (44°F)111 mm (4.4 inches)88%low
March Weather7°C (45°F)101 mm (4.0 inches)86%moderate
April Weather9°C (49°F)56 mm (2.2 inches)84%high
May Weather12°C (54°F)80 mm (3.2 inches)80%high
June Weather15°C (60°F)85 mm (3.3 inches)80%very high
July Weather17°C (63°F)86 mm (3.4 inches)70%very high
August Weather16°C (62°F)106 mm (4.2 inches)73%high
September Weather15°C (59°F)92 mm (3.6 inches)79%high
October Weather12°C (54°F)146 mm (5.7 inches)89%moderate
November Weather9°C (48°F)111 mm (4.4 inches)90%low
December Weather7°C (45°F)144 mm (5.7 inches)89%low

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