Last updated: August 27, 2025
In Harley, United Kingdom, the average temperature in May hovers around 12°C (53°F). Expect a range from a chilly -1°C (30°F) to a warm 26°C (78°F). During this time, anticipate 71 mm (2.8 in) of precipitation spread over about 13 days, with an average humidity of 79%. Whether you're exploring the outdoors or cozying up indoors, be prepared for a mix of weather conditions!
In May in Harley, the average temperature is 12°C (53°F). The maximum can reach 26°C (78°F), and the minimum can be as low as -1°C (30°F). This range makes Harley an ideal destination for travelers looking to experience a mix of mild weather and the possibility of cooler days, so be sure to pack accordingly!
In Harley in May, the total precipitation amount is 71 mm (2.8 in) occurring over the course of 13 days.
In Harley in May, humidity is 79%. With an average temperature of 12°C (53°F), this humidity feels like a damp blanket enveloping you, making outdoor activities slightly uncomfortable and ideal for cozy indoor explorations rather than extensive sightseeing.
In Harley 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 Harley.
UV Risk Categories
Weather in Harley varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Harley, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 54 mm (2.1 inches) | 89% | low |
| February Weather | 6°C (42°F) | 65 mm (2.5 inches) | 88% | low |
| March Weather | 7°C (44°F) | 73 mm (2.9 inches) | 86% | moderate |
| April Weather | 9°C (48°F) | 50 mm (2.0 inches) | 84% | moderate |
| May Weather | 12°C (53°F) | 71 mm (2.8 inches) | 79% | high |
| June Weather | 15°C (59°F) | 84 mm (3.3 inches) | 81% | very high |
| July Weather | 17°C (63°F) | 68 mm (2.7 inches) | 78% | very high |
| August Weather | 16°C (61°F) | 75 mm (3.0 inches) | 79% | high |
| September Weather | 14°C (57°F) | 60 mm (2.3 inches) | 85% | high |
| October Weather | 11°C (52°F) | 91 mm (3.6 inches) | 90% | moderate |
| November Weather | 7°C (46°F) | 73 mm (2.9 inches) | 91% | low |
| December Weather | 6°C (43°F) | 85 mm (3.4 inches) | 89% | low |