Weather In Miami Florida In May 2025 Average Temperature. Daily high temperatures increase by 3°f, from 83°f to 86°f, rarely falling below 79°f or exceeding 90°f. May in miami is characterized by warm temperatures that make it a popular destination for those looking to enjoy the beach and outdoor activities.

Climate in florida in may climate in miami in may. As the month progressed, temperatures tended to moderately rise, reaching an average of 29.3 ° c.