Wellesley Island State Park
🏆 Thousand Islands River Paradise — 2,636 acres on a St. Lawrence River island with 435 campsites, a sandy beach, nature center with butterfly house, and 9-hole golf course in one of New York’s most scenic waterways
Why Wellesley Island Is the Thousand Islands’ Best-Kept Secret
The Thousand Islands region of northern New York is one of those places that Americans who live west of the Appalachians or south of the Mason-Dixon line have probably only heard of as a salad dressing. Their loss. This stretch of the St. Lawrence River — where Lake Ontario empties toward the Atlantic and over 1,800 islands scatter across the waterway between the United States and Canada — is among the most beautiful and underappreciated landscapes in eastern North America. And Wellesley Island State Park, sitting mid-river on one of the largest islands, is the region’s finest public access point.
The park covers 2,636 acres — more than half of Wellesley Island — and offers the largest camping complex in the entire Thousand Islands region. But it is far more than a campground. The Minna Anthony Common Nature Center provides environmental education, a seasonal butterfly house, and miles of trails through diverse island habitats. The sandy beach on the St. Lawrence offers swimming in surprisingly clear water. A full-service marina serves the boating community. And a 9-hole golf course winds through the island’s interior. Few state parks anywhere offer this breadth of recreation in such a spectacular natural setting.
Minna Anthony Common Nature Center
The heart of the park’s educational mission, the Minna Anthony Common Nature Center occupies a peninsula on the island’s southeast side and offers some of the most engaging nature programming in the New York state park system.
🦋 Nature Center Highlights
• Butterfly House: Seasonal exhibit (July-August) where visitors walk among free-flying native butterflies in an enclosed garden. One of the few butterfly houses in any state park system.
• Museum: Interactive exhibits on Thousand Islands ecology, geology, and wildlife. Live animal displays including turtles, snakes, and fish from the St. Lawrence ecosystem.
• Voyager Canoe Tours: July-August guided canoe trips on the St. Lawrence in a 34-foot replica voyager canoe. Explore island shorelines inaccessible by land.
• Trails: 8-10 miles of trails through wetlands, forests, and along 3 miles of St. Lawrence shoreline. Quarter-mile accessible trail available.
Camping: The Heart of the Park
| Option | Sites/Units | Amenities | Rate |
|---|---|---|---|
| Standard Campsites | 260+ sites | Fire ring, picnic table, nearby restrooms | $18-$22/night |
| Electric Hookup | 115 sites | 30-amp electric, water nearby | $24-$28/night |
| Full Hookup | 57 sites | Electric, water, sewer | $28-$35/night |
| Wilderness Sites | 10+ sites | Boat/foot access only; primitive | $12-$15/night |
| Winterized Cabins | 10 cabins | Heat, beds, kitchen, bathroom | $65-$85/night |
| Full-Service Cottages | 12 cottages | Full kitchen, bedding, linens, patio | $100-$150/night |
The campground fills quickly during July and August weekends — reserve at least 2-3 weeks in advance for summer visits. The wilderness sites, accessible only by boat or foot trail, offer genuine solitude along the St. Lawrence shoreline and are ideal for kayakers and canoeists who want to camp without the RV crowd.
Water Activities
The St. Lawrence River defines the Wellesley Island experience. The park’s sandy beach offers swimming with a view that includes passing ships, distant islands, and on clear days, the Canadian shore. The water is remarkably clean — turquoise-tinted in summer — and while cold (the St. Lawrence never truly warms up), refreshing on hot August afternoons.
| Activity | Access | Season | Notes |
|---|---|---|---|
| Swimming | Beach (lifeguards) | Late June – Labor Day | Sandy bottom; cold but clean water |
| Boating | 4 launch sites + marina | May – October | Full-service marina; boat rentals available |
| Fishing | Shore + boat | Year-round | Muskie, bass, pike; autumn muskie fishing legendary |
| Kayaking | Beach + launches | May – October | Island-hopping among the Thousand Islands |
Hiking Trails
| Trail | Distance | Difficulty | Highlights |
|---|---|---|---|
| Nature Center Loop | 3.0 mi | Easy | Shoreline, wetlands, forest; interpretive signs |
| Eel Bay Trail | 2.5 mi | Easy-Moderate | Bay views; wildlife observation platforms |
| Granite Outcrop Trail | 1.5 mi | Easy | Canadian Shield geology; exposed granite |
| Accessible Trail | 0.25 mi | Easy | Wheelchair-accessible; wetland boardwalk |
Best Time to Visit Wellesley Island
| Season | Weather | Crowds | Best For |
|---|---|---|---|
| Summer (Jun-Aug) | 70-85F | High | Swimming, boating, butterfly house, full programming |
| Fall (Sep-Oct) | 50-65F | Moderate | Fall foliage on water; legendary muskie fishing |
| Spring (May-Jun) | 50-70F | Low | Birding migration; fishing season opens; quiet camping |
| Winter (Nov-Apr) | 15-35F | Very Low | Cross-country skiing; snowshoeing; ice fishing; cabin stays |
Budget Planning: Wellesley Island
| Expense | Day Trip | Weekend Camping | Cottage Week |
|---|---|---|---|
| Parking | $8/vehicle | Included | Included |
| Camping/Lodging | — | $36-$70/2 nights | $700-$1,050/week |
| Boat Rental | $50-$80 | $50-$80/day | $250+/week |
| Total (family of 4) | $8-$88 | $44-$150 | $700-$1,300 |
🏝️ Ready for a Thousand Islands Adventure?
Camp, swim, boat, and explore on one of the St. Lawrence River’s most beautiful islands.
Frequently Asked Questions
How do you get to Wellesley Island State Park?
Take Interstate 81 north from Syracuse or south from Canada. The island is accessed via the Thousand Islands Bridge, which connects the US mainland to Wellesley Island (and continues to Canada). Take Exit 51 from I-81 onto the island. The park entrance is a short drive from the exit. If coming from Canada, you will pass through US customs on the bridge.
Do you need a passport to visit Wellesley Island?
No. Wellesley Island is in the United States. The Thousand Islands Bridge continues from the island to Canada, but you do not need to cross the border to reach the park. However, if you plan to take a boat tour that enters Canadian waters, you will need a passport or enhanced ID for re-entry.
Is the water safe for swimming?
Yes. The St. Lawrence River water at the park beach is regularly tested and is remarkably clean. The water appears turquoise-tinted due to its clarity and the granite riverbed. However, the St. Lawrence stays cold — even in August, water temperatures rarely exceed 70F. Lifeguards are on duty at the beach from late June through Labor Day.
What is the best fishing at Wellesley Island?
The Thousand Islands region is legendary for muskie fishing, and autumn (September-November) is prime season. Smallmouth and largemouth bass are excellent throughout summer. Northern pike are available year-round. Shore fishing is possible from several spots in the park, but boat fishing in the channels between islands is far more productive. A New York State fishing license is required.
