Last updated: August 27, 2025
In Glenavy, United Kingdom, the average temperature in May hovers around 11°C (53°F), with minimums dipping to -1°C (31°F) and highs reaching up to 23°C (74°F). Expect 67 mm (2.6 in) of precipitation spread over 13 days, and prepare for a relatively humid atmosphere with an average humidity of 82%.
In May in Glenavy, the average temperature is 11°C (53°F). The maximum can reach 23°C (74°F), and the minimum can be as low as -1°C (31°F). Travelers should be prepared for a range of weather conditions, from mild days to crisp nights.
In Glenavy in May, the precipitation amount is 67 mm (2.6 in) spread over 13 days.
In Glenavy in May humidity is 82%. With an average temperature of 11°C (53°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities uncomfortable and sticky, often requiring frequent breaks to escape the muggy atmosphere.
In Glenavy 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 Glenavy.
UV Risk Categories
Weather in Glenavy varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Glenavy, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 55 mm (2.1 inches) | 87% | low |
| February Weather | 6°C (43°F) | 85 mm (3.3 inches) | 86% | low |
| March Weather | 7°C (44°F) | 77 mm (3.0 inches) | 86% | moderate |
| April Weather | 8°C (47°F) | 45 mm (1.8 inches) | 85% | moderate |
| May Weather | 11°C (53°F) | 67 mm (2.6 inches) | 82% | high |
| June Weather | 14°C (58°F) | 76 mm (3.0 inches) | 84% | very high |
| July Weather | 16°C (61°F) | 77 mm (3.0 inches) | 86% | very high |
| August Weather | 15°C (60°F) | 114 mm (4.5 inches) | 86% | high |
| September Weather | 13°C (56°F) | 68 mm (2.7 inches) | 88% | moderate |
| October Weather | 10°C (51°F) | 82 mm (3.2 inches) | 89% | moderate |
| November Weather | 8°C (46°F) | 81 mm (3.2 inches) | 90% | low |
| December Weather | 6°C (43°F) | 82 mm (3.2 inches) | 86% | low |