Most San Juan snorkeling tours last 1.5 to 3 hours and take you to shallow reefs or protected bays just outside the city. Expect warm, clear water with decent visibility, lots of small tropical fish, occasional turtles, and sometimes manatees if you're on the right route. The experience is beginner-friendly: gear is provided, guides give basic instruction, and groups are usually capped at 15 people. It's more of a relaxed outing than a remote wilderness trip— you'll see other boats and hear city sounds in the distance. Longer 6-8 hour versions add beach stops or a second site but can feel like a full-day commitment.
Best time is December through April when seas are calmer and rain is less likely. Summer and fall bring warmer water but higher chance of swells and afternoon showers. Expect to pay around $50-90 per person for a standard half-day tour including gear and a guide; longer trips or ones with food and drinks run $110-180. Private options push higher.
Pick a smaller group tour that focuses on one or two good sites rather than a rushed multi-stop cruise. Skip anything promising "world-class reefs"—the snorkeling here is pleasant but not Caribbean highlights. Bring your own snorkel if you have a favorite, and always check the weather forecast the night before.
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