There’s a moment every year when the ice pulls back from the St. Lawrence River, the shoreline trees begin to bud, and a familiar energy returns to the towns and villages of the Thousand Islands. That moment is almost here.
Spring in the 1000 Islands is one of the region’s best-kept secrets. While summer draws the biggest crowds, the weeks between late April and early June offer something truly special ā quieter waterways, dramatic sunrises over the river, migrating birds filling the skies, and the excitement of a whole region waking up after a long winter.
Whether you’re a longtime visitor counting the days until you return or someone planning your very first trip, here’s everything you need to know about spring 2026 in the Thousand Islands.
The River Is Waking Up
By mid-to-late April, the ice has typically cleared from the St. Lawrence River and the eastern shores of Lake Ontario. What follows is a transformation that never gets old. The water turns from grey to deep blue, fishing boats begin dotting the shoreline, and marinas across both the American and Canadian sides of the border start buzzing with activity.
For those who have never visited, theĀ 1000 Islands regionĀ stretches along the St. Lawrence River from Kingston, Ontario to Cornwall on the Canadian side, and from Oswego to Massena on the US side. More than 1,800 islands ā yes, there are actually more than a thousand ā dot this stunning international waterway, creating one of the most unique landscapes in North America.
What’s Opening This Spring
As the weather warms, the region’s most beloved attractions begin their seasonal openings:
š° Boldt Castle
No trip to the 1000 Islands is complete without a visit toĀ Boldt Castle, the magnificent Gilded Age mansion on Heart Island. Built as a tribute to love, the castle and its beautifully restored grounds typically open in mid-May. There’s nothing quite like arriving by boat and watching the castle’s towers rise above the treeline as you approach.
š¢ Boat Tours
The best way to experience the islands is from the water.Ā Uncle Sam Boat ToursĀ in Alexandria Bay is one of the region’s most popular options, offering narrated cruises through the heart of the island chain. Most boat tour operators begin running trips in May, with expanded schedules as summer approaches.
š½ļø Restaurants and Waterfront Dining
TheĀ restaurants of the 1000 IslandsĀ are an attraction in their own right. From the historicĀ Barracks InnĀ in Sackets Harbor to the lively patios of Alexandria Bay, waterfront dining returns as one of the great pleasures of the season. Many seasonal restaurants open their doors in late April and May ā and snagging a riverside table in the spring, before the summer rush, is one of life’s simple joys.
šØ Arts, Culture & Local Shops
TheĀ Thousand Islands Arts CenterĀ in Clayton opens for the season with exhibits, workshops, and demonstrations of traditional crafts. Galleries, boutiques, and artisan shops throughout the region begin welcoming visitors as the communities come alive.
Best Things to Do in the 1000 Islands This Spring
Looking for ideas? Here are some of the best ways to enjoy theĀ fun things to doĀ in the early season:
š£ Spring Fishing
Spring is prime time for anglers in the 1000 Islands. The St. Lawrence River and Lake Ontario are renowned for world-class bass, walleye, pike, and musky fishing. The water is cooler, the fish are active, and the competition for the best spots is far lighter than in July or August. Whether you’re a seasoned pro or bringing the kids out for their first catch, spring fishing here is hard to beat.
š¶ Kayaking and Paddling
As the river calms and the weather warms,Ā kayaking and paddlingĀ become some of the best ways to explore the islands up close. Paddle through quiet channels, discover hidden coves, and get a perspective of the islands that you simply can’t get from shore. Several outfitters, includingĀ Adirondack River Outfitters, offer guided trips and rentals.
š¦ Birdwatching
Spring migration brings an incredible variety of birds to the 1000 Islands corridor. The wetlands, islands, and shorelines along the St. Lawrence are part of a major flyway, attracting warblers, herons, ospreys, bald eagles, and dozens of other species. Bring your binoculars ā the birding here in May is exceptional.
š“ Cycling the Thousand Islands Parkway
On the Canadian side, the Thousand Islands Parkway is one of the most scenic cycling routes in Ontario. The flat, riverside road stretches through charming communities and offers stunning water views at nearly every turn.Ā
š· Wine Tasting
The region’s wineries, includingĀ Coyote Moon VineyardsĀ in Clayton, open for tastings and tours in the spring. It’s a wonderful way to spend an afternoon ā sipping local wines while overlooking rolling countryside just minutes from the river.
Spring Travel Tips for the 1000 Islands
Planning your visit? Keep these tips in mind:
- Pack layers. Spring days can swing from chilly mornings in the 40sĀ°F to warm afternoons in the 60s and 70sĀ°F. A light jacket and layers are essential.
- Book early for Memorial Day weekend.Ā This is the unofficial start of the busy season, and the bestĀ places to stayĀ fill up fast.
- Bring your passport. If you plan to explore both the US and Canadian sides of the 1000 Islands, you’ll need a valid passport to cross the Thousand Islands International Bridge.
- Check opening dates. Not everything opens on the same day. It’s a good idea to check with individual attractions and restaurants before you visit, especially in April and early May.
- Don’t skip the small towns.Ā Communities like Clayton, Cape Vincent, Gananoque, and Sackets Harbor are full of charm, local shops, and hidden gem restaurants. Explore theĀ communitiesĀ across both sides of the border.
Why Spring Might Be the Best Time to Visit
Ask any local, and many will tell you the same thing ā spring is their favorite season in the 1000 Islands. The light on the river is extraordinary. The pace is slower. The air smells like wet earth and pine. And there’s an electricity in the air as the whole region prepares for another glorious summer on the St. Lawrence.
You don’t have to fight for a parking spot. You don’t have to wait for a table. You get the beauty, the history, and the magic of this place ā with a little more breathing room to take it all in.
Start Planning Your 1000 Islands Spring Getaway
Ready to plan your trip? Explore everything the region has to offer:
- šØĀ Places to Stay
- š“Ā Places to Eat
- šÆĀ Fun Things to Do
- šĀ History of the 1000 Islands
Spring is almost here. The river is calling. We’ll see you on the water.
Have a business in the 1000 Islands that’s opening for the season? Get it listed on our site – It’s Free!
