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May Weather in Horncastle, United Kingdom

Last updated: August 27, 2025

In Horncastle, United Kingdom, the average temperature in May is a comfortable 12°C (54°F), making it a delightful time to explore. Temperatures can dip as low as 0°C (32°F) and reach up to 26°C (79°F). Be prepared for some rain, with an average precipitation of 72 mm (2.8 in) spread over 12 days, accompanied by a relatively high average humidity of 83%.

May Temperature in Horncastle

In May in Horncastle, the average temperature is 12°C (54°F). Maximums can reach 26°C (79°F), and minimums can be as low as 0°C (32°F). This makes it an ideal time for travelers to experience a pleasant mix of mild to warm weather while exploring the area.

May Weather in Horncastle: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Horncastle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Horncastle, May typically has an average temperature of 12°C (54°F), with highs reaching up to 26°C (79°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec404245485359636358534642
Data source: Temperature data for Horncastle 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.

May Precipitation in Horncastle

In Horncastle in May, the total precipitation amount is 72 mm (2.8 in) over the course of 12 days.

May Precipitation Trends in Horncastle

The chart displays monthly precipitation patterns in Horncastle, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Horncastle, May typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec446057337280778164786071
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Horncastle

In Horncastle in May humidity is 83%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making outdoor exploration feel sticky and uncomfortable, which can dampen the excitement of traveling.

May Average Humidity in Horncastle

This chart illustrates the average monthly humidity levels in Horncastle, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Horncastle is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%86%85%83%83%80%78%84%88%89%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Horncastle

In Horncastle in May, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Horncastle.

Maximum UV Index Levels in Horncastle for May

The chart shows the monthly maximum UV Index (UVI) for Horncastle in May, 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 May, the maximum UV index in Horncastle typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Horncastle May 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 May Weather in Horncastle Compares to Other Months

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

This table compares monthly weather conditions in Horncastle, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)44 mm (1.7 inches)89%low
February Weather6°C (42°F)60 mm (2.3 inches)87%low
March Weather7°C (45°F)57 mm (2.2 inches)86%moderate
April Weather9°C (48°F)33 mm (1.3 inches)85%moderate
May Weather12°C (54°F)72 mm (2.8 inches)83%high
June Weather15°C (60°F)80 mm (3.2 inches)83%very high
July Weather17°C (64°F)77 mm (3.0 inches)79%very high
August Weather17°C (63°F)80 mm (3.2 inches)78%high
September Weather15°C (58°F)64 mm (2.5 inches)84%moderate
October Weather11°C (53°F)78 mm (3.1 inches)88%moderate
November Weather8°C (46°F)60 mm (2.3 inches)89%low
December Weather5°C (42°F)71 mm (2.8 inches)88%low

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