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December Weather in St Just, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in St Just, United Kingdom hovers around 10°C (51°F). Expect cool conditions as the minimum temperature can dip to 6°C (43°F), while the maximum may reach 14°C (58°F). With 150 mm (5.9 in) of precipitation spread over 22 days, it's essential to be prepared for frequent showers. The average humidity during this time is a high 81%, contributing to a lush and vibrant atmosphere.

December Temperature in St Just

In December in St Just, the average temperature is 10°C (51°F). The maximum can reach 14°C (58°F), while the minimum can drop as low as 6°C (43°F). It’s a comfortable time to explore, so don’t forget to pack a light jacket for your travels!

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

The chart illustrates December temperature patterns in St Just, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In St Just, December typically has an average temperature of 10°C (51°F), with highs reaching up to 14°C (58°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec494848505358626260575351
Data source: Temperature data for St Just 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 Just

In St Just in December, the total precipitation amount is 150 mm (5.9 in) distributed over 22 days.

December Precipitation Trends in St Just

The chart displays monthly precipitation patterns in St Just, 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 Just, December typically receives around 150 mm (5.9 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec879990446469665873139125150
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in St Just

In St Just in December humidity is 81%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and forcing you to seek shelter more often than not.

December Average Humidity in St Just

This chart illustrates the average monthly humidity levels in St Just, 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 Just is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%84%82%83%85%85%85%85%84%84%82%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in St Just

In St Just 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 Just.

Maximum UV Index Levels in St Just for December

The chart shows the monthly maximum UV Index (UVI) for St Just 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 Just typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224679886421
Data source: St Just 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 Just Compares to Other Months

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

This table compares monthly weather conditions in St Just, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)87 mm (3.4 inches)81%low
February Weather9°C (49°F)99 mm (3.9 inches)83%low
March Weather9°C (49°F)90 mm (3.6 inches)82%moderate
April Weather10°C (50°F)44 mm (1.7 inches)83%high
May Weather12°C (54°F)64 mm (2.5 inches)85%high
June Weather14°C (58°F)69 mm (2.7 inches)85%very high
July Weather17°C (62°F)66 mm (2.6 inches)85%very high
August Weather16°C (62°F)58 mm (2.3 inches)85%very high
September Weather16°C (61°F)73 mm (2.9 inches)84%high
October Weather14°C (57°F)139 mm (5.5 inches)84%moderate
November Weather12°C (53°F)125 mm (4.9 inches)82%low
December Weather10°C (51°F)150 mm (5.9 inches)81%low

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