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December Weather in Hailsham, United Kingdom

Last updated: August 27, 2025

In Hailsham, United Kingdom, the average temperature in December hovers around 9°C (48°F). Expect a chill, with minimums dipping to 2°C (35°F) and maximums reaching 13°C (56°F). The month brings about 147 mm (5.8 in) of precipitation over approximately 18 days, contributing to a high average humidity of 92%. Be prepared for a damp and cool atmosphere!

December Temperature in Hailsham

In December in Hailsham, the average temperature is 9°C (48°F). Maximums can reach 13°C (56°F), while minimums can drop to as low as 2°C (35°F). It's advisable to pack layers to stay comfortable while exploring.

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

The chart illustrates December temperature patterns in Hailsham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hailsham, December typically has an average temperature of 9°C (48°F), with highs reaching up to 13°C (56°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec454546495359636462575148
Data source: Temperature data for Hailsham 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 Hailsham

In Hailsham in December, the precipitation amount is 147 mm (5.8 in) over a span of 18 days.

December Precipitation Trends in Hailsham

The chart displays monthly precipitation patterns in Hailsham, 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 Hailsham, December typically receives around 147 mm (5.8 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec788067314960497067131120147
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hailsham

In Hailsham in December humidity is 92%. With an average temperature of 9°C (48°F), this humidity feels like a heavy blanket enveloping you, making outdoor exploration quite challenging due to the stickiness in the air and the constant dampness that clings to your skin.

December Average Humidity in Hailsham

This chart illustrates the average monthly humidity levels in Hailsham, 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 Hailsham is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%82%81%76%73%80%89%92%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hailsham

In Hailsham 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 Hailsham.

Maximum UV Index Levels in Hailsham for December

The chart shows the monthly maximum UV Index (UVI) for Hailsham 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 Hailsham typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224678876421
Data source: Hailsham 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 Hailsham Compares to Other Months

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

This table compares monthly weather conditions in Hailsham, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)78 mm (3.1 inches)91%low
February Weather7°C (45°F)80 mm (3.2 inches)89%low
March Weather8°C (47°F)67 mm (2.6 inches)86%moderate
April Weather9°C (49°F)31 mm (1.2 inches)85%high
May Weather12°C (54°F)49 mm (1.9 inches)82%high
June Weather15°C (59°F)60 mm (2.3 inches)81%very high
July Weather17°C (63°F)49 mm (1.9 inches)76%very high
August Weather18°C (64°F)70 mm (2.8 inches)73%high
September Weather16°C (62°F)66 mm (2.6 inches)80%high
October Weather14°C (58°F)131 mm (5.1 inches)89%moderate
November Weather11°C (52°F)120 mm (4.7 inches)92%low
December Weather9°C (48°F)147 mm (5.8 inches)92%low

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