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May Weather in Runcorn, United Kingdom

Last updated: August 27, 2025

In May, the average temperature in Runcorn, United Kingdom hovers around 12°C (54°F). Expect a delightful range, with minimum temperatures dipping to 2°C (35°F) and maximums reaching 27°C (80°F). This month also brings about 68 mm (2.7 in) of precipitation spread over approximately 12 days, contributing to an average humidity of 79%. Whether you're planning outdoor adventures or cozy indoor activities, be ready for a blend of warmth and moisture!

May Temperature in Runcorn

In May in Runcorn, the average temperature is 12°C (54°F), with maximums reaching up to 27°C (80°F) and minimums dropping as low as 2°C (35°F). This diverse range makes it an ideal time for travelers to experience both warm and cool activities during their visit.

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

The chart illustrates May temperature patterns in Runcorn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Runcorn, May typically has an average temperature of 12°C (54°F), with highs reaching up to 27°C (80°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec424345495460636258524743
Data source: Temperature data for Runcorn 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 Runcorn

In Runcorn in May, the precipitation amount is 68 mm (2.7 in) over the course of 12 days.

May Precipitation Trends in Runcorn

The chart displays monthly precipitation patterns in Runcorn, 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 Runcorn, May typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec6374824968919910693987793
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Runcorn

In Runcorn in May, humidity is 79%. With an average temperature of 12°C (54°F), this humidity makes traveling feel quite muggy, leading to a sticky discomfort that can sap your energy and make outdoor activities less enjoyable.

May Average Humidity in Runcorn

This chart illustrates the average monthly humidity levels in Runcorn, 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 Runcorn is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%85%79%81%78%79%85%90%91%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Runcorn

In Runcorn 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 Runcorn.

Maximum UV Index Levels in Runcorn for May

The chart shows the monthly maximum UV Index (UVI) for Runcorn 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 Runcorn typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123578875421
Data source: Runcorn 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 Runcorn Compares to Other Months

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

This table compares monthly weather conditions in Runcorn, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)63 mm (2.5 inches)89%low
February Weather6°C (43°F)74 mm (2.9 inches)88%low
March Weather7°C (45°F)82 mm (3.2 inches)86%moderate
April Weather9°C (49°F)49 mm (1.9 inches)84%moderate
May Weather12°C (54°F)68 mm (2.7 inches)79%high
June Weather16°C (60°F)91 mm (3.6 inches)81%very high
July Weather17°C (63°F)99 mm (3.9 inches)78%very high
August Weather17°C (62°F)106 mm (4.2 inches)79%high
September Weather14°C (58°F)93 mm (3.7 inches)85%moderate
October Weather11°C (53°F)98 mm (3.9 inches)90%moderate
November Weather8°C (47°F)77 mm (3.0 inches)91%low
December Weather6°C (44°F)93 mm (3.7 inches)89%low

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