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December Weather in Trelech, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Trelech, United Kingdom hovers around 7°C (46°F), with a minimum dipping to -3°C (28°F) and a maximum reaching 13°C (56°F). Expect a precipitation amount of 144 mm (5.7 in) spread over 20 days, accompanied by a high average humidity of 89%. Be prepared for a chilly, damp month!

December Temperature in Trelech

In December in Trelech, the average temperature is 7°C (46°F). The maximum can reach 13°C (56°F), while the minimum can drop as low as -3°C (28°F). Travelers should prepare for chilly weather and dress in layers to stay comfortable during their visit.

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

The chart illustrates December temperature patterns in Trelech, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trelech, December typically has an average temperature of 7°C (46°F), with highs reaching up to 13°C (56°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec434445495359626158534845
Data source: Temperature data for Trelech 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 Trelech

In Trelech in December, the precipitation amount reaches 144 mm (5.7 in) over the course of 20 days.

December Precipitation Trends in Trelech

The chart displays monthly precipitation patterns in Trelech, 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 Trelech, December typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec801061015979937611296129124144
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Trelech

In Trelech in December, humidity is 89%. With an average temperature of 7°C (46°F), this humidity feels like a damp chill that clings to your skin, making it necessary to bundle up while exploring the surroundings.

December Average Humidity in Trelech

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

In Trelech 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 Trelech.

Maximum UV Index Levels in Trelech for December

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

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

This table compares monthly weather conditions in Trelech, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)80 mm (3.2 inches)88%low
February Weather7°C (44°F)106 mm (4.2 inches)88%low
March Weather7°C (45°F)101 mm (4.0 inches)86%moderate
April Weather9°C (49°F)59 mm (2.3 inches)84%moderate
May Weather12°C (54°F)79 mm (3.1 inches)80%high
June Weather15°C (59°F)93 mm (3.7 inches)80%very high
July Weather17°C (62°F)76 mm (3.0 inches)70%very high
August Weather16°C (61°F)112 mm (4.4 inches)73%high
September Weather14°C (58°F)96 mm (3.8 inches)79%high
October Weather12°C (53°F)129 mm (5.1 inches)89%moderate
November Weather9°C (48°F)124 mm (4.9 inches)90%low
December Weather7°C (46°F)144 mm (5.7 inches)89%low

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