Greater Miami has the warmest winter temperatures on the US mainland, and winter in Miami Beach means balmy days in the high 70s and warm nights in the 60s. Spring and autumn are lovely here as well; April and May in particular are an underappreciated time in Miami Beach, with some of the best weather of the year. But summer may be the most surprising: cooled by our proximity to the ocean, Miami Beach’s sea breezes mean our summer temperatures are often lower than those in Boston, New York, and Washington D.C. In short, there’s never a bad time to visit.