nomadseason

May Weather in Hillingdon, United Kingdom

Last updated: August 27, 2025

In May, the average temperature in Hillingdon, United Kingdom hovers around 13°C (55°F), with a minimum dipping to 1°C (35°F) and a maximum reaching 26°C (78°F). Expect about 63 mm (2.5 in) of precipitation over approximately 10 days, accompanied by an average humidity of 79%. Stay prepared for variable weather as you enjoy your time in this charming destination!

May Temperature in Hillingdon

In May in Hillingdon, the average temperature is 13°C (55°F), with maximums reaching up to 26°C (78°F) and minimums dropping as low as 1°C (35°F). This makes it an ideal time for travelers to enjoy a mix of warm days and cool evenings, perfect for exploring the local attractions.

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

The chart illustrates May temperature patterns in Hillingdon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hillingdon, May typically has an average temperature of 13°C (55°F), with highs reaching up to 26°C (78°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec414345495562656459534643
Data source: Temperature data for Hillingdon generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Hillingdon

In Hillingdon in May, the precipitation amount is 63 mm (2.5 in) over a span of 10 days.

May Precipitation Trends in Hillingdon

The chart displays monthly precipitation patterns in Hillingdon, 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 Hillingdon, May typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec525255336374646745865382
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Hillingdon

In Hillingdon in May humidity is 79%. With an average temperature of 13°C (55°F), this humidity feels like a damp chill that permeates clothing, making outdoor activities slightly uncomfortable and prompting travelers to seek shelter or dress in layers to stay warm while adjusting to the moist air.

May Average Humidity in Hillingdon

This chart illustrates the average monthly humidity levels in Hillingdon, 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 Hillingdon is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%79%81%71%76%82%91%92%92%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Hillingdon

In Hillingdon 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 Hillingdon.

Maximum UV Index Levels in Hillingdon for May

The chart shows the monthly maximum UV Index (UVI) for Hillingdon 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 Hillingdon typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Hillingdon 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 Hillingdon Compares to Other Months

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

This table compares monthly weather conditions in Hillingdon, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)52 mm (2.1 inches)91%low
February Weather6°C (43°F)52 mm (2.0 inches)89%low
March Weather7°C (46°F)55 mm (2.2 inches)86%moderate
April Weather10°C (49°F)33 mm (1.3 inches)85%moderate
May Weather13°C (55°F)63 mm (2.5 inches)79%high
June Weather16°C (62°F)74 mm (2.9 inches)80%very high
July Weather18°C (65°F)64 mm (2.5 inches)71%very high
August Weather18°C (64°F)67 mm (2.6 inches)76%high
September Weather15°C (59°F)45 mm (1.8 inches)82%high
October Weather12°C (53°F)86 mm (3.4 inches)90%moderate
November Weather8°C (47°F)53 mm (2.1 inches)92%low
December Weather6°C (44°F)82 mm (3.2 inches)92%low

Compare Hillingdon's Climate with Cities Worldwide