Natural swimming hole
Wellesley Island State Park
River · New York
About this swimming hole
Wellesley Island State Park has an official state-parks-listed sandy river beach for swimming on the St. Lawrence River. The Thousand Islands park offers the river beach plus a marina, campground, and nature trails. It is the region’s premier public river swim.
Good to know
| Water type | River |
|---|---|
| Best season | June-September |
| Fees | $8 parking |
| Reservations required | No |
| Parking | Park lots |
| Amenities | restrooms, lifeguards, picnic tables, campground, boat launch |
| County | Jefferson County |
| Nearest town | Fineview |
| Safety notes | River swim; use designated beach area |
Map
Official information
Official park / agency page ↗ — check current conditions, fees, and reservations here before you go.
Nearby swimming holes
Frequently asked questions
Can you swim in Wellesley Island State Park?
Yes — Wellesley Island State Park is listed as a natural swimming spot in New York. Heads-up: River swim; use designated beach area. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Wellesley Island State Park require reservations?
No reservations are required at Wellesley Island State Park based on current information — but verify before you go.
Is there a fee to visit Wellesley Island State Park?
Reported fee info: $8 parking. Fees can change — confirm with the official link.
When is the best time to visit Wellesley Island State Park?
The best season is typically June-September.