Yes, Punta Cana beaches are generally swimmable, with clear, shallow waters and white sand. However, the experience in 2026 is heavily influenced by the sargassum (seaweed) season, which typically peaks from May to October. During these months, large mats of brown seaweed can wash ashore, making swimming less pleasant due to the texture and the "rotten egg" smell of decaying plants. Most high-end resorts use crews and barriers to clear the seaweed daily. For the best swimming conditions, the winter months (December to April) offer the lowest seaweed risk and calmest waters. If you are visiting during peak seaweed season, beaches like Macao Beach or Bayahibe (a short trip away) tend to be more naturally seaweed-free. Always be mindful of local flags: a red flag indicates strong currents or dangerous conditions, which can occur on more exposed Atlantic-facing stretches of the coastline.