Isla San Pedro Nolasco sits about 25 nautical miles offshore from San Carlos in the Sea of Cortez, reached by chartered boat from Marina San Carlos on a crossing of roughly 1.5 hours each way. The uninhabited island is a protected nesting site for seabirds, including brown boobies and pelicans, and its surrounding waters host California sea lion colonies, making it a popular destination for snorkeling and wildlife viewing rather than a landing excursion, since going ashore requires a special CONANP protected-areas permit. A typical outing departs Marina San Carlos between 8:00 and 9:00 AM to reach the island by mid-morning, when conditions are calmest, followed by several hours snorkeling alongside sea lions and viewing seabird colonies along the cliffs before a packed lunch is served aboard the boat. The return crossing in early afternoon avoids the stronger winds that can develop later in the day. April through October brings the calmest sea conditions and warmest water for snorkeling, while winter crossings can be rougher and colder. Most operators bundle the boat, snorkeling gear, and lunch into a single full-day package, and no food or rest stops exist on the island itself, so provisions must come from San Carlos before departure.
How to get there
- Boat charter booked directly at Marina San Carlos, typically departing 8:00-9:00 AM
- Organized snorkeling and wildlife-viewing tours bundling the boat, gear, and lunch
- A special permit purchased through Mexico's protected-areas commission (CONANP) is required to go ashore
Location
Departs Marina San Carlos, Blvd. Manlio Fabio Beltrones S/N, 85506 San Carlos, Son., Mexico
27.9722, -111.3722 View on map
Highlights
- Snorkeling alongside California sea lion colonies
- Seabird nesting cliffs with brown boobies and pelicans
- Full-day boat charter departing Marina San Carlos
- Protected marine waters around an uninhabited island
- Onboard lunch included with most tour packages
Tips for visiting
- Book the boat charter directly at Marina San Carlos a day or more ahead during peak season
- Confirm whether the tour operator holds the required CONANP permit if landing on the island is planned
- Bring reef-safe sunscreen and a hat, since there is no shade once aboard the open boat
- Choose an April-to-October departure for calmer seas and warmer water for snorkeling
- Skip the trip if small-craft advisories are in effect; ask the marina about conditions before booking
When to visit
Book a morning departure between April and October for the calmest seas and best snorkeling visibility.
Frequently asked questions
How far is Isla San Pedro Nolasco from San Carlos?
About 25 nautical miles, roughly a 1.5-hour boat crossing each way.
Can visitors go ashore on the island?
Landing requires a special permit from Mexico's protected-areas commission (CONANP); most trips focus on snorkeling and boat-based wildlife viewing instead.
What wildlife can be seen on the trip?
California sea lion colonies and nesting seabirds such as brown boobies and pelicans are the main draws.
When is the best time for this boat trip?
April through October offers the calmest sea conditions and warmest water for snorkeling.