The Best Time to Swim with Turtles in Puerto Rico

Any month is a turtle month in Puerto Rico: the San Juan snorkels run all year, and the water stays warm, about 80 °F in winter and 86 °F in early autumn. What changes is the sea. From November to April, the winter swell season, long-period swells reach the coasts and can stop a snorkel, and the Atlantic hurricane season runs from June 1 to November 30, peaking around September 10. So the best time is a calm morning, in whatever month you are here, with a day spare in case the sea says no. The shore snorkel at Escambrón costs from $39 in current promotion (usually $58) a person (checked October 2026).

Month by month

Water: NOAA’s monthly averages for its Culebra and Esperanza stations (NOAA has no San Juan station in this series). Seasons: the National Weather Service in San Juan for the wave seasons and the National Hurricane Center for the hurricane season.

The water is warm enough to snorkel without a wetsuit all year; a rash guard is for the sun.

The winter swell season

The National Weather Service office in San Juan divides the local year into two wave seasons: winter, from November to April, and summer, from May to October. In winter, long-period swells hit the coasts, beach erosion increases, and rip currents, the islands’ leading surf hazard, are a risk at the beaches. San Juan’s turtle snorkels are on the Atlantic shore, so in those months a guided tour, which reads the sea and cancels when it must, is the safer way in. The Culebra and Vieques crossings are open water too.

When a tour is cancelled for weather, the listings generally offer another date or a full refund; check the terms on the one you book.

The hurricane season

The Atlantic hurricane season runs from June 1 to November 30, and the National Hurricane Center puts its peak around September 10. A storm days away can still raise the sea, so in those months keep an eye on the forecast and leave room in your plans.

The nesting seasons

Snorkels show you turtles feeding and swimming in the sea; nesting happens on the beaches, and the season matters only if you are on a beach where turtles nest.

From NOAA Fisheries and the DRNA’s management plan for the Condado Lagoon reserve.

If you come across a nest or a turtle on the beach, keep your distance and keep lights off it: the DRNA warns that lights on the beach confuse turtles and can kill them.

The time of day

The San Juan snorkels start from 8 am and run into the afternoon, and Scuba Dogs has a late-afternoon sunset slot at Escambrón. The Culebra days start early: the boat days ask you to check in 45 minutes to an hour before departure, and the ferry an hour before.

Prices, ratings and review counts from the listings (GetYourGuide checked October 2026; Viator checked October 2026). Operators price by date and season, so treat the figures as the shape of the market, not a quote.

Where

See San Juan, Culebra and Vieques for the snorkels themselves.