A typical sailing excursion from San Juan lasts 2–4 hours and takes you along the north coast, often stopping at a small beach or cove for swimming and snorkeling. Expect a mix of motoring and actual sailing depending on wind; the ride is usually calm but can get choppy if the trade winds are strong. Boats carry 6–20 people. You'll get basic snorkel gear, drinks (often rum punch, beer, water, and soft drinks), and a light lunch or snacks. The views of Old San Juan's forts from the water are genuinely nice, and the water is clear enough for decent snorkeling when conditions are good.
The best time is December through April when winds are steadier and rain is less likely. Summer and fall bring hotter days, more humidity, and a real chance of afternoon showers or tropical storms. Expect to pay around $65–$120 per person depending on boat size, inclusions, and whether it's a small-group or larger party boat. Private charters start closer to $400–$600 for the boat.
Pick a smaller sailboat if you actually want to sail and have a quieter experience; larger catamarans are more stable and social but feel closer to a floating bar. Skip the ones that advertise “sunset” departures from the marina if you want real sailing—many just motor around the bay for photos. Bring reef-safe sunscreen, a hat, and a waterproof bag for your phone.