May Weather in Heswall, United Kingdom

Last updated: August 27, 2025

In May, the average temperature in Heswall, United Kingdom is a mild 12°C (54°F), with fluctuations between a brisk 2°C (35°F) and a warm 27°C (80°F). Expect 68 mm (2.7 in) of precipitation spread over 13 days, accompanied by a relatively high average humidity of 79%.

May Temperature in Heswall

In May in Heswall, 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 Heswall: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Heswall, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heswall, 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).

Data source: Temperature data for Heswall generated using information from the Copernicus Climate Change Service.

May Precipitation in Heswall

In Heswall in May, the precipitation amount is 68 mm (2.7 in) spread over 13 days.

May Precipitation Trends in Heswall

The chart displays monthly precipitation patterns in Heswall, 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 Heswall, May typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Heswall

In Heswall 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 Heswall

This chart illustrates the average monthly humidity levels in Heswall, 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 Heswall is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Heswall

In Heswall 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 Heswall.

Maximum UV Index Levels in Heswall for May

The chart shows the monthly maximum UV Index (UVI) for Heswall 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 Heswall typically reaches 7, which falls under the high exposure category.

Data source: Heswall 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 Heswall Compares to Other Months

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

This table compares monthly weather conditions in Heswall, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	63 mm (2.5 inches)	89%	low
February Weather	6°C (43°F)	74 mm (2.9 inches)	88%	low
March Weather	7°C (45°F)	82 mm (3.2 inches)	86%	moderate
April Weather	9°C (49°F)	51 mm (2.0 inches)	84%	moderate
May Weather	12°C (54°F)	68 mm (2.7 inches)	79%	high
June Weather	15°C (60°F)	92 mm (3.6 inches)	81%	very high
July Weather	17°C (63°F)	97 mm (3.8 inches)	78%	very high
August Weather	16°C (62°F)	102 mm (4.0 inches)	79%	high
September Weather	14°C (58°F)	93 mm (3.7 inches)	85%	moderate
October Weather	11°C (53°F)	94 mm (3.7 inches)	90%	moderate
November Weather	8°C (47°F)	76 mm (3.0 inches)	91%	low
December Weather	6°C (44°F)	96 mm (3.8 inches)	89%	low