San Diego skyline © Adeliepenguin | Dreamstime
Though it’s quickly winding down, summer’s not over yet. There’s still time to enjoy the sun, sand and surf at these beautiful U.S. waterfront destinations.

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The Massachusetts island of Martha’s Vineyard is a nautical paradise, accessible only by boat and air. Visit the scenic Gay Head Cliffs, see the charming gingerbread cottages and vibrant culinary scene in Oak Bluffs, and enjoy the pleasant summer weather on the island’s beautiful beaches.

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Situated on the Monterey Peninsula, Pebble Beach lays at sea level, offering stunning sea views and captivating cliffs. Small coastal communities reside alongside large resorts and some of the most famous golf courses in the United States, including Pebble Beach Golf Links.

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For the maritime-minded, Lake Tahoe is a vacationer’s dream. Situated along the border of California and Nevada, Lake Tahoe is the largest alpine lake in North America. Visitors enjoy sailing, fishing and an array of water sports against the backdrop of snow-capped mountains.

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Located on the Atlantic coast of Florida’s Palm Beach County, the Singer Island peninsula offers charming marinas, hiking and biking trails, and sparkling white-sand beaches. For snorkeling and scuba diving enthusiasts, the world’s third-largest barrier reef is located just offshore.

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Each San Francisco waterfront neighborhood boasts its own unique flair. The most famous — Fisherman’s Wharf — offers a lively atmosphere with outdoor markets, seafood eateries, hordes of sea lions and pedestrian-friendly piers.

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Sarasota, Fla. is a culture-rich destination, offering nearly 40 miles of white-sand beaches lining the barrier islands just offshore. Visitors enjoy biking, kayaking and canoeing at Bayfront Park and Sarasota Bay, or golfing at one of the destination's world-class courses.

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So much of San Diego’s offerings revolve around the water — from surfing and swimming at La Jolla to biking along Mission Bay and touring ships at Navy Pier. With 17 miles of coastline, the city offers a wide variety of beautiful beaches and water-based activities.