Siesta Key’s Water Temperature & Quality
Siesta Key’s Gulf water runs from the mid-60s°F in winter to the mid-to-upper 80s°F in summer, based on typical seasonal readings near the island’s NOAA Big Sarasota Pass station. That means comfortable swimming is possible nearly year-round, with the warmest, calmest water from June through September. This guide breaks down what to expect season by…

