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Siesta Key boat rentals start around $150/hour for an powerboat rental without a captain. Prices go up to over $350/hour for a motor yacht charter with a captain.
The best time of year to visit Siesta Key for boating and outdoor activities is in September and October. The weather is still hot and sunny but you can avoid the crowds of families and people on their summer vacation. Boat rentals are a great thing to enjoy in Siesta Key at this time of year.
The water temperature in Siesta Key is usually warm enough to swim year-round. In the winter it cools down to the 60s while in the peak summer months it can be as warm as 88℉ in the waters of Siesta Key.