Peanut Island is a small, man-made island in the Palm Beach Inlet, created in 1918 from dredged material when the inlet was cut, and it has become the area's favorite water playground. Its lagoon, shallow, sheltered and washed by clean ocean water coming through the inlet, is clear enough on a good day to feel more like the Bahamas than South Florida. This sandbar and swim tour takes you there by boat, drops you into the water for time to swim, wade and relax, and lets the island's setting do the rest. It is an easy, family-friendly half-day, ideal for visitors who want a taste of the area's famously clear water without needing to dive or paddle. The island also has beaches, picnic areas, a campground and a quirky piece of American history.
The geography is what makes Peanut Island special. The Palm Beach Inlet, one of the busiest passes on the coast, pushes clean ocean water into the lagoon on each incoming tide, and the island's protected shallows catch that water. Visibility varies with tide, wind and recent weather, but incoming tides generally bring the clearest conditions and the highest chance of seeing small tropical fish, rays and sea grass life from the sandbar.
Boats gather on weekends in good weather, and the vibe is cheerful and sociable, so a guided tour helps you avoid the logistics of anchoring, tides and navigation. Ask the operator about the best time to go for your dates, and be ready for a lively scene on weekend afternoons.
The island has a surprising history. During the early 1960s, President John F. Kennedy, who spent time at his family's Palm Beach residence, was provided with a Cold War fallout bunker built on Peanut Island, a facility that was kept secret for years and has since been restored as a small museum run by local historical groups.
Even if your tour is mainly about swimming, the story adds to the island's reputation as a place worth visiting, and some visitors combine a sandbar stop with a bunker tour on a separate trip. There is also a ring of walking paths, picnic shelters and campsites, plus a snorkel trail on the island's south side that is popular with families.
Practical tips make the day easier. Wear a swimsuit and bring a towel, reef-safe sunscreen, a hat and water; a rash guard helps against the sun. If you use fins or a mask, ask whether the operator provides them. Water shoes help on the sandy bottom and around shells. Avoid wearing valuables onto the boat and use a dry bag for your phone.
The sandbar is shallow but tidal current can be noticeable near the inlet's mouth, so stay with the group and follow the guide's boundaries for children and weaker swimmers. Check the weather the morning of your tour, since thunderstorms and strong winds can alter the plan, and be flexible about the schedule if the operator moves departure times to match the tide.
Respect the setting. The sandbar sits within an area used by many boats, so keep close to the group, watch for vessel traffic and never swim alone toward the channel. Take all trash with you when you leave, avoid standing on sea grass beds and keep your distance from any wildlife you see. If you want to extend the day, the island has picnic areas and a short walking path, and a morning on the sandbar followed by an afternoon at a Singer Island beach makes a full day.
What to expect
The experience
A guided boat trip to the Peanut Island sandbar and lagoon, with time to swim, wade and relax in shallow, clear water.
Best time
Incoming tide, mid-morning to early afternoon, for the clearest water. Weekends are busier.
How long
Allow two to three hours including the boat ride.
Tips
Bring reef-safe sunscreen, water shoes and a dry bag. Follow the guide's boundaries near the inlet current. Confirm whether snorkel gear is included.
Quick picks
- Best for
- Families and groups who want clear water without a long drive or a dive course.
- Families
- Shallow, sheltered water and a friendly island; children need life vests and supervision.
- Couples
- Go on a weekday for a calmer scene and lighter crowds.
- Pair with
- A seafood lunch at the Riviera Beach marinas or a beach stop at Singer Island.
- Time needed
- Half a day.
Good questions
Do I need to be a strong swimmer?+
The sandbar is shallow, but inlet currents can be noticeable. Confident swimmers can enjoy the area freely; weaker swimmers should stay close to the guide and wear flotation.
Is the water really clear?+
On incoming tides with light wind it can be strikingly clear. Visibility changes by day, so treat it as a likely, not guaranteed, feature.
Can I visit the Kennedy bunker?+
The bunker is a separate visit run by local historical groups on the island. Check its schedule and ticket details before you go.
What should I bring?+
Swimwear, towel, reef-safe sunscreen, hat, water and water shoes. A dry bag for your phone is a good idea.
Is it suitable for young children?+
Many families bring children, with life vests and close supervision. Ask about age policies when you reserve.