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January Weather in Sleaford, United Kingdom

Last updated: August 27, 2025

In Sleaford, United Kingdom, the average temperature in January hovers around 5°C (41°F). During this time, temperatures can dip to a chilly -4°C (25°F) or rise to a mild 15°C (59°F). Expect about 46 mm (1.8 in) of precipitation spread over 9 days, contributing to an average humidity level of 90%—perfect for cozy indoor activities!

January Temperature in Sleaford

In January in Sleaford, the average temperature is 5°C (41°F), with maximums reaching up to 15°C (59°F) and minimums dropping as low as -4°C (25°F). Travelers should be prepared for chilly conditions, so layering and warm clothing are advisable when visiting during this time.

January Weather in Sleaford: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Sleaford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sleaford, January typically has an average temperature of 5°C (41°F), with highs reaching up to 15°C (59°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec404245485460646358534642
Data source: Temperature data for Sleaford 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 Sleaford

In Sleaford in January, the precipitation amount is 46 mm (1.8 in) over the course of 9 days.

January Precipitation Trends in Sleaford

The chart displays monthly precipitation patterns in Sleaford, 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 Sleaford, January typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec465860367180738159785775
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Sleaford

In Sleaford in January, humidity is 90%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that clings to your skin, making travel feel more strenuous as you navigate the cold air mixed with moisture, potentially leaving you feeling sluggish and uncomfortable.

January Average Humidity in Sleaford

This chart illustrates the average monthly humidity levels in Sleaford, 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 Sleaford 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 January generated using information from the Copernicus Climate Change Service.

January UV Index in Sleaford

In Sleaford 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 Sleaford.

Maximum UV Index Levels in Sleaford for January

The chart shows the monthly maximum UV Index (UVI) for Sleaford 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 Sleaford typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123578875421
Data source: Sleaford 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 Sleaford Compares to Other Months

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

This table compares monthly weather conditions in Sleaford, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)46 mm (1.8 inches)90%low
February Weather6°C (43°F)58 mm (2.3 inches)88%low
March Weather7°C (45°F)60 mm (2.4 inches)86%moderate
April Weather9°C (48°F)36 mm (1.4 inches)84%moderate
May Weather12°C (54°F)71 mm (2.8 inches)80%high
June Weather16°C (61°F)80 mm (3.2 inches)81%very high
July Weather18°C (64°F)72 mm (2.9 inches)76%very high
August Weather17°C (63°F)81 mm (3.2 inches)77%high
September Weather15°C (59°F)59 mm (2.3 inches)85%moderate
October Weather11°C (53°F)78 mm (3.1 inches)90%moderate
November Weather8°C (46°F)57 mm (2.2 inches)92%low
December Weather6°C (42°F)75 mm (2.9 inches)90%low

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