May in Bayamón averages a daily high of 31.1°C with nights around 23.7°C. Expect roughly 14.9 wet days totalling 187.9mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Bayamón is November–April.
Based on TOA BAJA LEVITTOWN, PR US (4.3km), 1995–2024. 18 years of May data.