Last updated: August 27, 2025
In Chalfont St Giles, United Kingdom, the average temperature in May hovers around 13°C (55°F). You can expect a minimum chill of 1°C (34°F), with a peak reaching up to 26°C (79°F). During this month, 66 mm (2.6 in) of precipitation may fall over approximately 11 days, and the average humidity sits at a comfortable 79%.
In May in Chalfont St Giles, the average temperature is 13°C (55°F). Maximums can reach 26°C (79°F) and minimums can be as low as 1°C (34°F). Travelers should be prepared for a range of temperatures, making layered clothing a wise choice during this time.
In Chalfont St Giles in May, the precipitation amount is 66 mm (2.6 in) spread over 11 days.
In Chalfont St Giles 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.
In Chalfont St Giles 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 Chalfont St Giles.
UV Risk Categories
Weather in Chalfont St Giles varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Chalfont St Giles, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 56 mm (2.2 inches) | 91% | low |
| February Weather | 6°C (43°F) | 52 mm (2.0 inches) | 89% | low |
| March Weather | 7°C (45°F) | 57 mm (2.2 inches) | 86% | moderate |
| April Weather | 9°C (49°F) | 34 mm (1.3 inches) | 85% | moderate |
| May Weather | 13°C (55°F) | 66 mm (2.6 inches) | 79% | high |
| June Weather | 16°C (61°F) | 74 mm (2.9 inches) | 80% | very high |
| July Weather | 18°C (65°F) | 67 mm (2.6 inches) | 71% | very high |
| August Weather | 17°C (64°F) | 71 mm (2.8 inches) | 76% | high |
| September Weather | 15°C (59°F) | 51 mm (2.0 inches) | 82% | high |
| October Weather | 11°C (53°F) | 91 mm (3.6 inches) | 90% | moderate |
| November Weather | 8°C (46°F) | 54 mm (2.1 inches) | 92% | low |
| December Weather | 6°C (43°F) | 83 mm (3.3 inches) | 92% | low |