South Beach faces the open Atlantic Ocean and is known for strong surf, powerful waves, and occasional rip currents, making it less ideal for inexperienced swimmers. There are no lifeguards on duty at most sections. The surf conditions that attract wave riders can be hazardous for casual swimmers, especially children. If you plan to swim, stay close to shore, never swim alone, and be aware of changing ocean conditions. Calmer swimming conditions are typically found at Edgartown's north-facing beaches like Fuller Street Beach.

Summer (June through August) offers the warmest weather and water temperatures in the mid-60s to low 70s°F, though beaches are most crowded. Late spring and early fall provide fewer crowds with pleasant temperatures. Surfers often prefer fall and winter when Atlantic swells produce the best waves, though water is cold (wetsuit required). The beach is accessible year-round, but facilities and parking attendants operate primarily from Memorial Day through Labor Day. For optimal conditions with manageable crowds, consider visiting in June or September.

South Beach is located about 3 miles from downtown Edgartown via Katama Road. There's a large parking lot at the beach, free in off-season but requiring payment during summer months (typically Memorial Day to Labor Day). Parking fills quickly on summer weekends, so arrive early. No public transportation serves the beach directly, so you'll need a car, bicycle, or taxi. The flat Katama Road is popular with cyclists. From the parking area, it's a short walk over dunes to reach the oceanfront.

South Beach has portable restrooms available during the summer season, but no permanent facilities or food concessions. There are no restaurants, cafés, or snack bars at the beach itself, so bring your own food, water, and supplies. The nearest restaurants and shops are in Edgartown, about 3 miles away. Pack a cooler with beverages and snacks for the day. Limited shade is available, so bring umbrellas or beach tents. For accommodations, you'll need to stay in Edgartown or elsewhere on Martha's Vineyard.

South Beach (Katama Beach) is Martha's Vineyard's premier surf spot because it directly faces the Atlantic Ocean, receiving consistent swells year-round that other island beaches don't get. The beach break produces waves suitable for all surfing levels, though conditions are best during fall and winter when nor'easters and Atlantic storms generate larger swells. The wide, three-mile beach offers plenty of space for surfers to spread out. Local surf shops in Edgartown offer rentals and lessons for those wanting to experience the island's best waves.