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December Weather in Syston, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Syston, United Kingdom hovers around 6°C (42°F), with a chilly minimum of -5°C (24°F) and a pleasant maximum of 14°C (58°F). Expect 77 mm (3.0 in) of precipitation spread over 15 days, contributing to a high average humidity of 90%. Prepare for a damp and crisp month!

December Temperature in Syston

In December in Syston, the average temperature is 6°C (42°F). The maximum can reach 14°C (58°F), while the minimum can drop to as low as -5°C (24°F). Be prepared for chilly weather and pack layers to stay comfortable during your travels!

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

The chart illustrates December temperature patterns in Syston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Syston, December typically has an average temperature of 6°C (42°F), with highs reaching up to 14°C (58°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec404244485460646358524542
Data source: Temperature data for Syston 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 Syston

In Syston in December, the precipitation amount is 77 mm (3.0 in) over a span of 15 days.

December Precipitation Trends in Syston

The chart displays monthly precipitation patterns in Syston, 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 Syston, December typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec495662396276777761796077
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Syston

In Syston in December, humidity is 90%. With an average temperature of 6°C (42°F), this humidity feels like a heavy blanket wrapping around you, making every step feel more laborious and causing your clothes to cling uncomfortably, which can be quite challenging for traveling.

December Average Humidity in Syston

This chart illustrates the average monthly humidity levels in Syston, 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 Syston is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%80%81%76%77%85%90%92%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Syston

In Syston 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 Syston.

Maximum UV Index Levels in Syston for December

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

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

This table compares monthly weather conditions in Syston, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)49 mm (1.9 inches)90%low
February Weather6°C (42°F)56 mm (2.2 inches)88%low
March Weather7°C (45°F)62 mm (2.4 inches)86%moderate
April Weather9°C (48°F)39 mm (1.5 inches)84%moderate
May Weather12°C (54°F)62 mm (2.5 inches)80%high
June Weather16°C (60°F)76 mm (3.0 inches)81%very high
July Weather18°C (64°F)77 mm (3.0 inches)76%very high
August Weather17°C (63°F)77 mm (3.0 inches)77%high
September Weather14°C (58°F)61 mm (2.4 inches)85%moderate
October Weather11°C (52°F)79 mm (3.1 inches)90%moderate
November Weather7°C (46°F)60 mm (2.4 inches)92%low
December Weather6°C (42°F)77 mm (3.0 inches)90%low

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