May in Perth Amboy averages a daily high of 22.3°C with nights around 10.4°C. Expect roughly 13 wet days totalling 108.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Perth Amboy is May–June.
Based on NEW BRUNSWICK 3 SE, NJ US (13.8km), 1995–2024. 30 years of May data.