May in Manchester averages a daily high of 19.9°C with nights around 6.8°C. Expect roughly 10.3 wet days totalling 89.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Manchester is May–September.
Based on MASSABESIC LAKE, NH US (5.1km), 1995–2024. 29 years of May data.