Waterlemon Cay is the one snorkel spot on St. John you have to walk to, and the walk is half of why people love it. The small green island sits just offshore at the eastern end of Leinster Bay, on the quiet far corner of the North Shore, and the only way in is a flat shoreline trail from the Annaberg parking area. No road to the sand, no beach bar, no line of rental jeeps. Just a gravel path along the water, a short strip of beach, and a reef that regularly turns up turtles, rays and starfish in a single swim.
Here is how to plan the trip, what the water is actually like, and the safety piece most guides gloss over.
How to Get to Waterlemon Cay
Drive North Shore Road out of Cruz Bay, past Hawksnest, Trunk Bay, Cinnamon and Maho, then follow the road toward Annaberg. Parking sits near the end of Annaberg Mary Creek Road, in the same lot that serves the Annaberg Sugar Mill ruins. Give it roughly half an hour from Cruz Bay, longer if you stop for the overlooks, which you will.
That lot is small and it is shared between two of the busiest stops on the North Shore. It fills up through the middle of the day and stays full into the afternoon. If you want a space without circling, be there before nine.
The trail itself starts past the end of the paved road. It follows the shoreline of Leinster Bay for about eight tenths of a mile, mostly flat, mostly gravel, with rocky patches that will punish flip flops. Most people walk it in twenty to thirty minutes each way. You pass old estate stonework and get an open view across the water to Tortola and the British Virgin Islands the entire time. It is one of the easiest walks in Virgin Islands National Park, and if you want the rest of the island trail options, our St. John hiking trails guide covers the harder ones.
The trail ends at Waterlemon Bay, a modest beach of sand and rocky shelf. It is not a lounging beach in the Trunk Bay sense. It is a staging area for the swim.
Snorkeling Waterlemon Cay
The cay sits roughly 500 to 600 feet offshore, which is a channel crossing of about a tenth of a mile. That distance is the whole decision point. Strong swimmers cover it in a few minutes. Everyone else should think it through honestly before pushing off.
The swim out
Enter from the eastern end of the beach, closest to the cay, and take the shortest line across. The bottom under the channel is seagrass and sand, which is not glamorous but is exactly where turtles feed, so keep your head down on the way out. Once you reach the cay, work around its edge rather than heading straight for open water.
The western side of the cay, the side facing the beach, is the sheltered one. It takes the least wind and chop and holds the easiest snorkeling. The far point and the eastern side are more exposed and are where conditions turn. Plenty of people circle the whole island and love it. Plenty of others turn back at the point and still have a great morning.
What you will see
Green sea turtles are common in the grass beds between the beach and the cay. Cushion sea stars, the big orange ones, sit right on the sand in shallow water. Around the rocky edges of the island you get hard and soft coral, schooling reef fish, squid, conch and, if you are lucky, a spotted eagle ray gliding through. It is one of the more reliably productive spots on the island, which is why it shows up near the top of our best snorkeling in St. John roundup.
If the turtles are your priority and the walk plus the swim sounds like a lot, Maho Bay puts you over seagrass a few feet from the road instead.
Currents and safety
This is the part to take seriously. The current at Waterlemon Cay is usually mild but steady, and it can get strong around the far point and the exposed eastern side. It is not a lifeguarded beach and there is nobody stationed at the trailhead. Help is a twenty minute walk away.
A few things make it a lot safer. Go in the morning, when wind and chop are typically lowest. Snorkel with a buddy, which the park recommends across the board. If you are not a confident open water swimmer, wear a flotation vest or tow a float, and there is no shame in it at all. And read the water before you commit. If it looks churned up from the beach, it will be worse at the point.
A common local approach is to enter near the eastern end, let the water carry you along the sheltered side, and finish back toward the beach rather than fighting your way home at the end when you are tired.
Annaberg Sugar Plantation Is Right There
Since you are already parked, walk up to the Annaberg Sugar Plantation ruins before or after. It is one of the most complete Danish colonial sugar sites left in the Virgin Islands, dating from the 18th and 19th centuries, with a standing windmill tower, the factory works and the remains of the quarters where enslaved workers lived. Park waysides walk you through what each structure did.
The path from the lot up to the historic district is steep and rocky, though the loop through the buildings themselves is flat and easy. Budget thirty to forty minutes. It reframes the whole North Shore, and it pairs naturally with the ruins along the nature loop at Cinnamon Bay if you are building a history day.
What to Bring
There are no facilities at Waterlemon Bay. No restrooms, no rentals, no shade structures, no snack shack. Whatever you want, you carry in and out.
- Your own snorkel gear. Nothing is rented on site, so pick it up in Cruz Bay or bring it from home.
- Water. The park recommends about half a gallon per person per four hours of hiking, and you will be in the sun the whole way.
- Real shoes. The gravel and rock sections are hard on sandals, and water shoes help at the rocky entry.
- Reef safe sunscreen. Requested by the park to protect the coral, and easy to buy on island.
- A dry bag. You will want your keys and phone off the sand while you swim.
- A float or vest if anyone in your group is a nervous swimmer.
Best Time to Visit Waterlemon Cay
Early morning wins on every count. Calmer water, better visibility, cooler walking, and parking that actually exists. Mid morning through mid afternoon brings the day trippers and the wind usually picks up. Late afternoon empties out again, but you do not want to be swimming a channel with the light going.
Season matters less here than the daily wind. Winter can bring stronger northerly swell that stirs up the North Shore, so check the water before you commit to the walk.
Frequently Asked Questions
Is Waterlemon Cay hard to get to?
The walk is easy, about eight tenths of a mile of flat shoreline trail with some rocky footing, and takes most people twenty to thirty minutes. The harder part is the swim, a channel of roughly 500 to 600 feet out to the cay. If you are comfortable in open water it is straightforward. If you are not, bring a flotation device or snorkel the shallows near the beach instead.
Can you snorkel there without swimming to the island?
Yes. The seagrass and sand between the beach and the cay is where a lot of the turtle sightings happen, and the shallows off the beach hold starfish and reef fish. You get a good snorkel without ever crossing the channel.
Is there a fee to visit?
No. There is no entrance station at the Leinster Bay trailhead and no fee to walk the trail or use the beach. Parking is free and first come, first served.
Staying Close to the North Shore
Waterlemon Cay rewards early starts, and the difference between a nine o’clock parking space and a noon lap of the lot is often where you sleep. Our villas across the North Shore and the Cruz Bay side put you close enough to be on the trail before the day trippers land, with a kitchen for the cooler and a place to rinse the gear after.
Browse our St. John villas or get in touch with the local team and we will point you toward the right house for how you actually want to spend the week.
