September in Mendip averages a daily high of 19.5°C with nights around 10.1°C. Expect roughly 11.2 wet days totalling 50.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Mendip is June–September.
Based on YEOVILTON, UK (25.7km), 1995–2024. 29 years of September data.