3-Day Treasure Coast Weekend: Jonathan Dickinson, Jupiter, and Blowing Rocks

The Treasure Coast is what Florida looks like when the high-rises finally give up. Drive north out of Palm Beach and the condos thin, the strip malls space out, and somewhere around Hobe Sound the landscape exhales: pine scrub, mangrove creek, a river the federal government decided was worth protecting forever. The name comes from the dead — the 1715 Spanish treasure fleet went down in a hurricane just offshore here, and gold doubloons still wash up after big storms. But the real treasure is overhead and underfoot: one of the most important sea-turtle nesting coastlines in the United States, Florida’s first federally designated Wild and Scenic River, and a barrier-island limestone reef that occasionally turns into a row of natural geysers.

This is an easy three-day weekend. Nothing here demands fitness or nerve — the hardest physical thing you’ll do is paddle a canoe or climb 105 lighthouse steps. What it demands instead is timing, because the single best moment on the whole itinerary, Blowing Rocks at full roar, only happens when the tide and the swell agree.

Sea-turtle nesting season runs roughly May through October. If you visit then, the beaches go lights-out after dark — no flashlights, no phone screens facing the water. Respect it. The turtles were here first by about a hundred million years.

Overview

The Treasure Coast covers Martin, St. Lucie, and Indian River counties, the stretch north of Palm Beach where development thins and wild Florida returns. This itinerary anchors in the southern end of it, around Hobe Sound and Jupiter, where the marquee stops cluster within a 20-minute drive of each other.

Best time: Winter and spring. November through April is cooler, drier, far less buggy, and — critically — winter is when Atlantic swell makes Blowing Rocks actually blow. Summer is hot, thunderstorm-prone in the afternoons, and overlaps turtle nesting and its lights-out rules.

Difficulty context: Easy. Comfortable shoes, a paddle, and sunscreen cover it. The Loxahatchee paddle is flat water; the lighthouse climb is short; everything else is a walk. Kids do this trip well.

Base camp: Jupiter or Hobe Sound, both central to all three days. Jupiter has the most lodging and food; Hobe Sound is quieter and closer to Day 1 and Day 3.

Day by Day

Day 1 — Jonathan Dickinson State Park, Hobe Sound

Start at the largest state park in southeast Florida. Jonathan Dickinson is 10,500 acres of sand-pine scrub, pine flatwoods, and river — a landscape most visitors don’t associate with Florida at all.

First stop: Hobe Mountain. Calling an 86-foot sand dune a “mountain” is a Florida joke, but the observation tower on top is no joke — it’s the highest natural point for miles, and from the deck you look out over an unbroken sea of scrub to the Atlantic on one side and the Intracoastal on the other. Ten-minute walk up, enormous payoff.

Then the headline act: the Loxahatchee River. This was the first river in Florida to earn federal Wild and Scenic designation, and paddling it explains why — cypress draped over dark water, manatees in the cooler months, and an extraordinary sense of being nowhere near a city you can in fact see on a map. Rent a canoe or kayak at the park concession and paddle upstream, or book the guided river tour to the Trapper Nelson homestead — the cabin and grounds of a legendary 20th-century “wild man of the Loxahatchee,” reachable only by boat.

If you have energy left, the park’s scrub trails are some of the best places in the region to spot a Florida scrub-jay, a threatened bird found nowhere else on Earth. Bike them or hike them in the late afternoon when the heat breaks.

Sleep: Jupiter or Hobe Sound.

Day 2 — Jupiter Inlet Lighthouse and Blowing Rocks

Begin in town. The Jupiter Inlet Lighthouse, lit in 1860, is a 105-foot red-brick tower above the inlet, and climbing it earns you the best wide view on the coast — the inlet, the Loxahatchee mouth, and the barrier islands strung north and south. The grounds include a small museum worth the time.

Spend the late morning on Jupiter’s beaches. The town is famous for its dog-friendly stretches, so it’s the rare place you can bring the whole household to the sand. The nearshore rocks and reef hold fish, and on a calm day with decent visibility you can snorkel them straight off the beach.

In the afternoon, drive across to Blowing Rocks Preserve on Jupiter Island, a Nature Conservancy site protecting the largest Anastasia limestone outcrop on the U.S. Atlantic coast. Time this for high tide on a day with winter swell. When the conditions line up, incoming surf jams into the rock’s flutes and erupts upward in plumes that can reach 50 feet — a genuine spectacle. When they don’t, it’s a pretty rock shelf and a nice beach, which is the honest caveat you should plan around (more below).

Sleep: Jupiter.

Day 3 — Hobe Sound National Wildlife Refuge and turtles

Close the weekend slow and quiet at the Hobe Sound National Wildlife Refuge — a barrier-island beach on the ocean and a mangrove shoreline on the Indian River Lagoon side. This is one of the most important sea-turtle nesting beaches in the country; in summer the refuge runs permitted nighttime turtle walks, and year-round the dunes and lagoon are superb for birding. Stop at the nature center to understand what you’re looking at before you walk the beach.

If you want one more stop on the drive home, the Florida Oceanographic Coastal Center in Stuart has touch-tank stingrays, resident sea turtles, and lagoon exhibits — a clean, kid-friendly cap on the trip and a good rainy-hour backup.

Then drive home, sandy and salt-stiff, which is the correct state to end a Treasure Coast weekend in.

What to Pack

• Reef-safe sunscreen — No oxybenzone, no octinoxate. You’ll be exposed on the lighthouse deck, the river, and two beaches.
• Water shoes or sturdy sandals — Blowing Rocks limestone is sharp and slick. Bare feet are a bad idea.
• A dry bag — For phone, keys, and a towel on the Loxahatchee paddle.
• Binoculars — Scrub-jays at Jonathan Dickinson, shorebirds at Hobe Sound. Worth the bag space.
• Bug spray — Mangrove and scrub edges have mosquitoes, especially at dawn and dusk.
• A real hat and sunglasses — Subtropical sun, open water, white limestone. The glare is relentless.
• A tide chart and surf-report check — Not a physical item, but the most important thing on this list for Day 2.

Getting There

The hub is the Jupiter / Hobe Sound area off I-95 and US-1, in Martin and Palm Beach counties.

Key logistics:

• Jonathan Dickinson State Park — 16450 SE Federal Hwy (US-1), Hobe Sound. Park entry runs around $6 per vehicle. Canoe and kayak rentals and the Loxahatchee river tour are at the park concession; book the tour ahead on busy weekends.
• Jupiter Inlet Lighthouse — 500 Captain Armours Way, Jupiter. Admission is roughly $12–18; check days open, as the climb closes in bad weather.
• Blowing Rocks Preserve — 574 S Beach Rd, Hobe Sound (Jupiter Island). The Nature Conservancy charges a small per-person entry, and parking is very limited — arrive early.
• Hobe Sound NWR — 13640 SE Federal Hwy, Hobe Sound; nature center and beach access are separated by a short drive.
• From Miami it’s about 100 miles, roughly 1.5–2 hours up I-95. From Orlando, about 2.5 hours.

Honest Caveats

Blowing Rocks is conditional. This is the big one. The blowholes only perform on a high tide with winter or storm swell. At low tide or on a flat, glassy day, you’ve driven to look at rocks. Check the tide chart and the local surf forecast, aim for the hour around high tide, and have realistic expectations. And do not climb on or stand on the formation — the limestone is razor-sharp, slick with algae, and people get hurt on it every year.

Jupiter Island is exclusive, and parking is tight. Blowing Rocks and the island generally have very limited public parking that fills fast on weekends and any day the surf is up. Arrive early or be prepared to wait.

Turtle season changes the rules. From roughly May through October, the nesting beaches go lights-out after dark — no flashlights, no phone screens toward the water, no beach bonfires. These rules exist because hatchlings navigate by natural light and artificial light kills them. Follow them without exception.

Summer is hard. Heat, daily afternoon thunderstorms, and mosquitoes make summer the least pleasant time to do this trip — and it collides with the turtle restrictions above. The cooler, drier season is better on every axis, and winter is the only season that reliably delivers Blowing Rocks at full roar.

None of this is a reason to skip the Treasure Coast. It’s a reason to go on the right weekend, with a tide chart open and your expectations honest.