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January Weather in Castle Cary, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Castle Cary, United Kingdom hovers around 5°C (42°F), with a minimum dipping to -5°C (24°F) and a maximum reaching 14°C (57°F). Expect 53 mm (2.1 in) of precipitation spread over 10 days, accompanied by high humidity levels averaging 88%. Prepare accordingly for a chilly, damp atmosphere!

January Temperature in Castle Cary

In January in Castle Cary, the average temperature is 5°C (42°F). Maximums can reach 14°C (57°F), while minimums can dip as low as -5°C (24°F). Be prepared for chilly weather and dress in layers if you're planning to travel during this time.

January Weather in Castle Cary: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Castle Cary, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castle Cary, January typically has an average temperature of 5°C (42°F), with highs reaching up to 14°C (57°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec414345495460646258534644
Data source: Temperature data for Castle Cary 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.

January Precipitation in Castle Cary

In Castle Cary in January, the precipitation amount is 53 mm (2.1 in) spread over a duration of 10 days.

January Precipitation Trends in Castle Cary

The chart displays monthly precipitation patterns in Castle Cary, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Castle Cary, January typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec5362755174816485501036392
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Castle Cary

In Castle Cary in January humidity is 88%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less appealing and leading you to seek warmth indoors instead.

January Average Humidity in Castle Cary

This chart illustrates the average monthly humidity levels in Castle Cary, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Castle Cary is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Castle Cary

In Castle Cary in January, 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 Castle Cary.

Maximum UV Index Levels in Castle Cary for January

The chart shows the monthly maximum UV Index (UVI) for Castle Cary in January, 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 January, the maximum UV index in Castle Cary typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Castle Cary January 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 January Weather in Castle Cary Compares to Other Months

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

This table compares monthly weather conditions in Castle Cary, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)53 mm (2.1 inches)88%low
February Weather6°C (43°F)62 mm (2.5 inches)88%low
March Weather7°C (45°F)75 mm (2.9 inches)86%moderate
April Weather9°C (49°F)51 mm (2.0 inches)84%moderate
May Weather12°C (54°F)74 mm (2.9 inches)80%high
June Weather16°C (60°F)80 mm (3.2 inches)80%very high
July Weather18°C (64°F)64 mm (2.5 inches)70%very high
August Weather17°C (62°F)85 mm (3.3 inches)73%high
September Weather14°C (58°F)50 mm (2.0 inches)79%high
October Weather11°C (53°F)103 mm (4.1 inches)89%moderate
November Weather8°C (47°F)63 mm (2.5 inches)90%low
December Weather7°C (44°F)92 mm (3.6 inches)89%low

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