September is one of the most popular times to visit Sanibel, as the summer crowds begin to dwindle and the weather remains pleasantly warm. This month offers a unique opportunity for travellers seeking a more tranquil experience while still enjoying the beautiful beaches and stunning sunsets that Sanibel is famous for.
The peak season for Sanibel typically runs from February to April, attracting many visitors who flock to the island for its ideal beach weather, with temperatures averaging in the low to mid-20s Celsius. During this vibrant period, you'll find a lively atmosphere, with plenty of outdoor activities such as shell collecting, biking along scenic trails, and exploring the J.N. "Ding" Darling National Wildlife Refuge, where you can spot an array of wildlife.
If you're looking for a more budget-friendly option, consider visiting in October. This month is part of the low season, which means fewer tourists and a more peaceful setting to enjoy the island's natural beauty. The weather remains warm, averaging in the upper 20s Celsius, making it still quite comfortable for beach lounging and nature walks.