September in Miami averages a daily high of 30.9°C with nights around 25.4°C. Expect roughly 14.2 wet days totalling 204.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Miami is November–April.
Based on MIAMI BEACH, FL US (7km), 1995–2024. 23 years of September data.