Kayak Camping the San Juan Islands: A Paddler's Guide to the Stuart Island Loop from San Juan County Park

Why the San Juan Islands Deserve a Spot on Your Paddle List

The San Juan archipelago is 172 named islands and reefs scattered across the northern reaches of Puget Sound where the Strait of Juan de Fuca meets the Strait of Georgia. It's saltwater maze country — narrow channels between forested islands, kelp beds thick enough to grab your paddle, and tidal currents strong enough to move you sideways faster than you can paddle forward.

What makes the San Juans exceptional for kayak camping is the network of marine state parks accessible only by boat. These island camps sit on protected shorelines with designated tent sites, composting toilets, and the kind of views that make you wonder why anyone sleeps indoors in August. Stuart Island, Jones Island, Sucia Island, Turn Island — each one is a day's paddle from the next, and each one earns its reputation.

The wildlife seals the deal. The San Juans are core habitat for the Southern Resident orca population. Harbor seals haul out on every other rock shelf. Bald eagles nest in the madrona along the bluffs. Harbor porpoises, Steller sea lions, river otters, great blue herons — the animal list on a three-day paddle reads like a field guide table of contents. And in late summer, bioluminescent plankton light up your paddle strokes at night.

But this isn't gentle water. Tidal currents between islands regularly run 2–4 knots, and exposed crossings like San Juan Channel and Spieden Channel can build steep, confused chop when wind opposes current. This is sea kayaking — 16-foot boats, sealed bulkheads, and the skills to self-rescue in cold, moving water. The reward is worth the preparation.

Difficulty: Intermediate to advanced. Open-water crossings with tidal current, commercial vessel traffic, and exposure to wind and chop. Water type: Saltwater, tidal. Strong currents in channels between islands. Moderate to heavy boat traffic in summer. Best for: Experienced sea kayakers comfortable with tide and current planning, open-water crossings, and multi-day self-supported camping.

Getting There: Route Details & Coordinates

GPS Coordinates: 48.5131° N, 123.1601° W (San Juan County Park, Smallpox Bay launch)

• Launch: Smallpox Bay, San Juan County Park, west side of San Juan Island. Gravel beach launch with gradual grade. Kayak racks behind restroom. Hiker/biker/kayaker campsite available for the night before departure.
• Getting to San Juan Island: Washington State Ferry from Anacortes to Friday Harbor (approximately 1 hour). Vehicle reservations strongly recommended in summer. San Juan County Park is approximately 10 miles west of Friday Harbor.
• Route: North from Smallpox Bay along the west shore of San Juan Island, around the north end through Mosquito Pass or Roche Harbor, then northwest across Spieden Channel to Stuart Island. Return via the same route or loop south through San Juan Channel.
• Distance: Approximately 12–15 miles each way to Stuart Island depending on route. Full loop 30–40 miles over 3–4 days.
• Estimated time: 2–3 paddling days each direction with island exploration. Budget 5–8 hours of paddle time per travel day depending on current timing.
• Difficulty: Intermediate to advanced — open channel crossings with tidal current up to 3+ knots, commercial vessel traffic, and wind exposure

The first day north from Smallpox Bay is a shoreline paddle — Haro Strait on your left, San Juan Island's rocky west coast on your right. This stretch runs through prime orca-watching water; Lime Kiln Point State Park, visible from the water, is one of the best land-based whale-watching sites in the world for a reason. Round the island's north end and you'll enter the more sheltered water around Roche Harbor before committing to the Spieden Channel crossing.

Spieden Channel is the crux of the route. It's roughly 1.5 miles across with tidal currents that can exceed 3 knots. Time this crossing for slack water — even 30 minutes off slack can mean fighting a current that pushes you sideways toward open water. On the far side, Reid Harbor on Stuart Island opens up: a long, protected inlet with the marine state park campsite at the far end.

Stuart Island rewards the effort. Hike the gravel road to Turn Point Lighthouse for 360-degree views of the Gulf Islands, San Juans, and the open strait. The campsites at Reid Harbor are protected from weather, and the harbor itself — while popular with sailboats — quiets down at dusk.

Pro tip: Time every crossing to slack current. The NOAA Tidal Current Predictions for the San Juan Islands are non-negotiable planning tools. Download or print current tables before you leave cell coverage. A 30-minute miscalculation on Spieden Channel can turn a straightforward crossing into a serious situation.

View San Juan County Park on Google Maps

Best Time to Go

Late July through early September is prime season. You want long daylight, manageable wind, and the warmest water temps the San Juans offer — which is still cold enough to demand respect.

August is the sweet spot for most paddlers. Days are long, the afternoon westerlies are generally manageable if you start early, and the Southern Resident orcas are most frequently sighted along the west side of San Juan Island during summer salmon runs. Clear August evenings also produce the best bioluminescence — paddle after dark and watch your wake glow blue-green with every stroke.

Weekdays thin the crowds at marine state park campsites. Weekend departures in July and August mean competition for the best sites on Jones and Stuart Islands. A Tuesday launch often means you'll have Reid Harbor's campground largely to yourself.

September offers quieter water, fewer boats, and beautiful light, but days shorten fast and weather becomes less predictable. Morning fog can reduce visibility on crossings.

Water temperature: Summer surface temps run 50–54°F (10–12°C). This is cold water. A drysuit or full wetsuit is smart insurance. Immersion without proper thermal protection can lead to cold-water incapacitation in minutes. Dress for the water temperature, not the air.

Gear Up: What to Bring

Multi-day sea kayak camping in the San Juans means packing everything into sealed hatches and deck bags, launching through surf and current, and keeping it all dry through salt spray, rain, and the occasional wave over the bow on an exposed crossing. Every piece of gear either fits in the boat or stays home. And everything critical needs to survive getting wet on the outside.

Every paddler heading to the San Juan Islands should pack:

• Explorer™ Dry Bag: Your sleeping bag, camp clothes, and insulating layers live here — sealed in the rear hatch where they stay dry through crossing spray and rain. On a three-night trip to Stuart Island, the Explorer is your insurance policy: when you pull into Reid Harbor after six hours of paddling in fog and chop, the fleece and dry socks you pull out of this bag are the difference between a good evening and a miserable one.
• Glacier™ Clear Dry Bag: Your quick-access day bag — sunscreen, snacks, a wind layer, neoprene gloves, the tide table printout you need to check before committing to Spieden Channel. The clear shell lets you spot what you need without cracking the seal. Clip it behind your seat or in the day hatch for on-water access between crossings.
• E-Merse™ Waterproof Cases: Your phone is your camera on this trip — and the orca shots alone justify keeping it accessible and bone-dry. The E-Merse keeps touchscreen function through the case so you can shoot without exposing electronics to salt spray. Also protects a handheld VHF radio, which you should absolutely carry in the San Juans.
• Mesh Deck Bag: Snacks, a water bottle, a compact first-aid kit, a whistle — the things you need within arm's reach during a two-hour crossing. Lashes to deck rigging, drains fast after spray, and stays low-profile enough that it won't catch wind on an exposed fetch.

Beyond Seattle Sports gear: A sea kayak with sealed bulkheads is the baseline — no recreational boats on these crossings. Pack a marine VHF radio (critical for weather updates and emergency communication — cell coverage is patchy across the islands). Bring a paddle float and bilge pump for self-rescue. A drysuit or quality wetsuit for immersion protection. PFD — required by Washington state law and non-negotiable in tidal water this cold. Navigation: a waterproof chart of the San Juan Islands, a deck compass, and printed NOAA tidal current tables. Headlamp with fresh batteries (you'll want it for the bioluminescence paddle). And camp-side: a water filter or treatment system (no potable water at most marine state park sites), a stove and fuel (fires only in designated pits, check for burn bans), and a food-hanging system or hard-sided container — raccoons on the island camps are aggressive and experienced.

Know Before You Go

• Permits: No paddling permit currently required to launch from Smallpox Bay (the previous permit program has been suspended). Discover Pass not required for San Juan County Park but is required for Washington State Parks marine campsites.
• Campsite reservations: Marine state park island campsites (Stuart, Jones, Sucia, Turn) are generally first-come, first-served for individual tent sites. Some sites can be reserved through Washington State Parks. Always have a backup island in your plan — arriving at a full campsite after a long crossing is a real possibility in summer.
• Fees: San Juan County Park camping approximately $20–30/night (reserve in advance May–September). Marine state park camping fees vary. Washington State Ferry fares from Anacortes to Friday Harbor vary by vehicle size and season — check WSDOT and reserve early.
• Facilities: Flush toilets and potable water at San Juan County Park. Composting toilets at most marine state park island camps. Potable water available seasonally at some islands (Sucia, Jones) but not reliably — always carry a filter or treatment.
• Cell service: Patchy to nonexistent on outer islands. Reliable in Friday Harbor and Roche Harbor. VHF radio is your primary communication tool on the water.
• Nearest town: Friday Harbor (10 miles from San Juan County Park) for groceries, fuel, gear, and ferry terminal.
• Wildlife regulations: Maintain 300 yards (1,000 feet) from all orcas — this is federal law, not a guideline. Do not paddle toward whales. Keep 100 yards from all other marine mammals (seals, sea lions, porpoises). Follow Be Whale Wise guidelines.
• Hazards: Tidal currents up to 3–4 knots in channels (primary navigation hazard), wind-against-current chop on exposed crossings, commercial vessel traffic (ferries, freighters — stay out of shipping lanes), cold water immersion (50–54°F), fog reducing visibility on crossings, and aggressive raccoons at island campsites. Parker Reef between Orcas and Sucia can produce whirlpools and confused water — avoid when current is running. Do not attempt channel crossings without consulting current tables and timing for slack water.
• The Bottom Line

Kayak camping the San Juan Islands is the trip that teaches you what sea kayaking is actually for. Not exercise. Not scenery, though there's plenty. It's the feeling of pulling your loaded boat onto a gravel beach on an island you paddled to, setting up camp with the tide going out and an eagle overhead, and knowing that everything you need for the next three days is sealed in your hatches and strapped to your deck.

You earn it with a tide table, a weather window, channel crossings timed to the minute, and gear that keeps your critical layers dry through six hours of salt spray. The orcas, the bioluminescence, the sunset from Turn Point Lighthouse — those are the bonus. The real reward is the self-sufficiency. Paddle out. Set up. Wake up on a different island. Repeat.

We build gear for trips like this. You bring the tidal current tables.