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December Weather in Llangefni, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Llangefni, United Kingdom hovers around 7°C (45°F), but be prepared for a range from a chilly -1°C (30°F) to a mild 13°C (56°F). With an average precipitation of 129 mm (5.1 in) spread over 20 days, and a high humidity level of 89%, it's wise to pack your umbrella and dress in layers!

December Temperature in Llangefni

In December in Llangefni, the average temperature is 7°C (45°F). Maximum temperatures can reach 13°C (56°F), while minimums can dip to as low as -1°C (30°F). Be sure to pack warm clothing if you're planning to travel during this month!

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

The chart illustrates December temperature patterns in Llangefni, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Llangefni, December typically has an average temperature of 7°C (45°F), with highs reaching up to 13°C (56°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec434445485358616057524745
Data source: Temperature data for Llangefni 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 Llangefni

In Llangefni in December, the total precipitation amount is 129 mm (5.1 in) over the course of 20 days.

December Precipitation Trends in Llangefni

The chart displays monthly precipitation patterns in Llangefni, 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 Llangefni, December typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec771031045571918210598128111129
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Llangefni

In Llangefni 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 Llangefni

This chart illustrates the average monthly humidity levels in Llangefni, 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 Llangefni is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%85%79%81%78%79%85%90%91%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Llangefni

In Llangefni 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 Llangefni.

Maximum UV Index Levels in Llangefni for December

The chart shows the monthly maximum UV Index (UVI) for Llangefni 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 Llangefni typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Llangefni 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 Llangefni Compares to Other Months

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

This table compares monthly weather conditions in Llangefni, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)77 mm (3.0 inches)89%low
February Weather6°C (44°F)103 mm (4.1 inches)88%low
March Weather7°C (45°F)104 mm (4.1 inches)86%moderate
April Weather9°C (48°F)55 mm (2.2 inches)84%moderate
May Weather12°C (53°F)71 mm (2.8 inches)79%high
June Weather15°C (59°F)91 mm (3.6 inches)81%very high
July Weather16°C (61°F)82 mm (3.2 inches)78%very high
August Weather16°C (61°F)105 mm (4.1 inches)79%high
September Weather14°C (57°F)98 mm (3.9 inches)85%moderate
October Weather11°C (53°F)128 mm (5.1 inches)90%moderate
November Weather9°C (48°F)111 mm (4.4 inches)91%low
December Weather7°C (45°F)129 mm (5.1 inches)89%low

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