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December Weather in Deganwy, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Deganwy, United Kingdom hovers around 6°C (44°F), with a minimum of -3°C (26°F) and a maximum reaching 13°C (56°F). This month experiences significant precipitation, averaging 115 mm (4.5 in) over 18 days, while the atmosphere remains damp, with an average humidity of 89%.

December Temperature in Deganwy

In December in Deganwy, the average temperature is 6°C (44°F). Maximum temperatures can reach 13°C (56°F), while minimum temperatures can drop to a chilly -3°C (26°F). Visitors should be prepared for a mix of cool and mild weather during their travels.

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

The chart illustrates December temperature patterns in Deganwy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Deganwy, December typically has an average temperature of 6°C (44°F), with highs reaching up to 13°C (56°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344485358616057524643
Data source: Temperature data for Deganwy 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 Deganwy

In Deganwy in December, the precipitation amount is 115 mm (4.5 in) occurring over 18 days.

December Precipitation Trends in Deganwy

The chart displays monthly precipitation patterns in Deganwy, 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 Deganwy, December typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec71929656719992969610791115
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Deganwy

In Deganwy in December, humidity is 89%. With an average temperature of 6°C (44°F), this humidity feels like an uncomfortable chill that clings to your skin, making it difficult to enjoy outdoor activities and ideal for layered clothing.

December Average Humidity in Deganwy

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

In Deganwy 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 Deganwy.

Maximum UV Index Levels in Deganwy for December

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

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

This table compares monthly weather conditions in Deganwy, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)71 mm (2.8 inches)89%low
February Weather6°C (43°F)92 mm (3.6 inches)88%low
March Weather7°C (44°F)96 mm (3.8 inches)86%moderate
April Weather9°C (48°F)56 mm (2.2 inches)84%moderate
May Weather12°C (53°F)71 mm (2.8 inches)79%high
June Weather15°C (59°F)99 mm (3.9 inches)81%very high
July Weather16°C (61°F)92 mm (3.6 inches)78%very high
August Weather16°C (60°F)96 mm (3.8 inches)79%high
September Weather14°C (57°F)96 mm (3.8 inches)85%moderate
October Weather11°C (52°F)107 mm (4.2 inches)90%moderate
November Weather8°C (47°F)91 mm (3.6 inches)91%low
December Weather6°C (44°F)115 mm (4.5 inches)89%low

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