The best time to visit Miami Beach is the spring. Between March and May, the sun shines with high 70s and low 80s during the day. Also, you’ll miss the peak winter rates. This part of Florida enjoys a subtropical climate, meaning it’s usually warm year-round and a bit rainy. Pack an umbrella if you visit in summer or fall; at the very least, you can expect some afternoon showers. In the worse-case scenario, you could experience torrential downpours since hurricane season runs from about June to November. If you’re trying to keep your bank account in check, hotel rates and flight fares tend to decrease in the summer as the temperature and precipitation increase.
Most visitors say the best time to visit Key West is January to May because the weather is perfect: it’s not unbearably humid yet, and it’s so cold at home. In fact, from November to March Key West is the hottest place in the entire contiguous USA. As a result, it’s peak season, very busy and super expensive in Key West in these months.