May in Hialeah averages a daily high of 30.5°C with nights around 22.8°C. Expect roughly 10.4 wet days totalling 154.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hialeah is November–April.
Based on HIALEAH, FL US (3.5km), 1995–2024. 28 years of May data.