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May Weather in Thornhill, United Kingdom

Last updated: August 27, 2025

In May, the average temperature in Thornhill, United Kingdom hovers around 10°C (50°F). Expect a chilly minimum of -2°C (28°F) while the days can warm up to a pleasant 24°C (76°F). During this month, you might experience 75 mm (2.9 in) of precipitation over 15 days, accompanied by an average humidity of 80%. Make sure to pack accordingly!

May Temperature in Thornhill

In May in Thornhill, the average temperature is 10°C (50°F). The maximum can reach 24°C (76°F), and the minimum can be as low as -2°C (28°F). Be prepared for a mix of mild warmth and chilly conditions while traveling.

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

The chart illustrates May temperature patterns in Thornhill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thornhill, May typically has an average temperature of 10°C (50°F), with highs reaching up to 24°C (76°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec383941445056585753484339
Data source: Temperature data for Thornhill 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 Thornhill

In Thornhill in May, the precipitation amount is 75 mm (2.9 in) over a span of 15 days.

May Precipitation Trends in Thornhill

The chart displays monthly precipitation patterns in Thornhill, 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 Thornhill, May typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec861611164875112103144101142121122
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Thornhill

In Thornhill in May, humidity is 80%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill enveloping you, making traveling somewhat uncomfortable as it seeps into your clothes and clings to your skin, leaving you longing for a cozy indoor refuge.

May Average Humidity in Thornhill

This chart illustrates the average monthly humidity levels in Thornhill, 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 Thornhill is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%85%81%83%82%82%88%90%92%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Thornhill

In Thornhill in May, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Thornhill, you can refer to this Hourly UV Index in Thornhill.

Maximum UV Index Levels in Thornhill for May

The chart shows the monthly maximum UV Index (UVI) for Thornhill 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 Thornhill typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568865321
Data source: Thornhill 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 Thornhill Compares to Other Months

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

This table compares monthly weather conditions in Thornhill, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)86 mm (3.4 inches)90%low
February Weather4°C (39°F)161 mm (6.3 inches)88%low
March Weather5°C (41°F)116 mm (4.6 inches)86%moderate
April Weather7°C (45°F)47 mm (1.9 inches)85%moderate
May Weather10°C (50°F)75 mm (2.9 inches)80%high
June Weather13°C (56°F)112 mm (4.4 inches)83%very high
July Weather15°C (59°F)103 mm (4.0 inches)82%very high
August Weather14°C (57°F)144 mm (5.7 inches)82%high
September Weather12°C (54°F)101 mm (4.0 inches)88%moderate
October Weather9°C (48°F)142 mm (5.6 inches)90%moderate
November Weather6°C (43°F)121 mm (4.8 inches)92%low
December Weather4°C (40°F)122 mm (4.8 inches)89%low

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