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December Weather in St Leonards, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in St Leonards, United Kingdom hovers around 8°C (47°F), with minimums dipping to 1°C (34°F) and maximums reaching up to 14°C (57°F). The region experiences approximately 129 mm (5.1 in) of precipitation spread over 17 days, contributing to an average humidity of 92%. Make sure to dress accordingly and embrace the cozy vibe of the month!

December Temperature in St Leonards

In December in St Leonards, the average temperature is 8°C (47°F). Maximum can reach 14°C (57°F) and minimum can be as low as 1°C (34°F). Travelers should pack layers to stay comfortable in the cool and variable weather.

December Weather in St Leonards: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in St Leonards, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In St Leonards, December typically has an average temperature of 8°C (47°F), with highs reaching up to 14°C (57°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec444546495460646461565047
Data source: Temperature data for St Leonards 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 St Leonards

In St Leonards in December, the total precipitation amount reaches 129 mm (5.1 in), occurring over a span of 17 days.

December Precipitation Trends in St Leonards

The chart displays monthly precipitation patterns in St Leonards, 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 St Leonards, December typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec79858139617865896113595129
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in St Leonards

In St Leonards in December humidity is 92%. With an average temperature of 8°C (47°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities uncomfortable and exhausting for travelers.

December Average Humidity in St Leonards

This chart illustrates the average monthly humidity levels in St Leonards, 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 St Leonards is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%79%81%71%76%82%91%92%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in St Leonards

In St Leonards 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 St Leonards.

Maximum UV Index Levels in St Leonards for December

The chart shows the monthly maximum UV Index (UVI) for St Leonards 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 St Leonards typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224578876421
Data source: St Leonards 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 St Leonards Compares to Other Months

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

This table compares monthly weather conditions in St Leonards, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)79 mm (3.1 inches)91%low
February Weather7°C (45°F)85 mm (3.3 inches)89%low
March Weather8°C (47°F)81 mm (3.2 inches)86%moderate
April Weather10°C (49°F)39 mm (1.5 inches)85%moderate
May Weather12°C (55°F)61 mm (2.4 inches)79%high
June Weather16°C (61°F)78 mm (3.1 inches)80%very high
July Weather18°C (65°F)65 mm (2.5 inches)71%very high
August Weather18°C (64°F)89 mm (3.5 inches)76%high
September Weather16°C (61°F)60 mm (2.4 inches)82%high
October Weather13°C (56°F)135 mm (5.3 inches)90%moderate
November Weather10°C (50°F)95 mm (3.7 inches)92%low
December Weather8°C (47°F)129 mm (5.1 inches)92%low

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