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Weather in Saint John
Reversing falls and Bay of Fundy tides
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About Saint John
Saint John sits at the mouth of the Bay of Fundy, where the world's highest tides create the Reversing Falls phenomenon. The working harbor bustles with shipping. St. Martins covered bridges dot the Fundy coast.
Best months to visit
Year-round
Things to do in Saint John
Watch the Reversing Falls tidal phenomenon
Explore the revitalized waterfront and City Market
Kayak the Bay of Fundy spotting whales
Visit the Bay of Fundy Discovery Centre
Tour historic covered bridges like St. Martins
Hike coastal trails with Fundy views
Weather by month
Click any month for detailed weather information and travel tips.
January
-1C
Cold, with some rainy days.
February
-1C
Cold, with some rainy days.
March
2C
Cold, with some rainy days.
April
8C
Cold, with some rainy days.
May
14C
Cool, with some rainy days.
June
18C
Mild and comfortable, with some rainy days.
July
21C
Mild and comfortable, with some rainy days.
August
22C
Mild and comfortable, with some rainy days.
September
19C
Mild and comfortable, with occasional showers.
October
14C
Cool, with some rainy days.
November
7C
Cold, with some rainy days.
December
2C
Cold, with some rainy days.
Saint John is a gritty, fog-wrapped port city on the Bay of Fundy, famous for the Reversing Falls where tidal swings of up to 9 metres make the river appear to flow backwards twice a day. Its uptown core mixes Victorian brick warehouses with a busy market that's been trading since 1876, and the surrounding Fundy coastline offers some of the most dramatic tidal scenery in the world within easy reach.
Best areas to stay in Saint John
Uptown Saint John
The historic commercial core with the City Market, brick warehouses converted to restaurants, and harbour views.
Reversing Falls area
The site of the famous tidal rapids, with a visitor centre and viewing platforms.
Irving Nature Park
A coastal park on the city's edge with trails through forest, bog and rocky shoreline.
St. Martins / Fundy Trail (nearby)
A short drive away, offering sea caves, covered bridges and dramatic coastal hiking.
Getting to Saint John
✈
Flights
Saint John Airport has limited connections via Toronto and Montreal; many visitors fly into Halifax and drive.
⏱
From London
~2.5-3 hours by car from Halifax.
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Getting around
Uptown is walkable; a car is needed for the Reversing Falls, Irving Nature Park and the Fundy coast.
Frequently asked questions
When is the best time to visit Saint John?
June to September offers the mildest weather, though the Bay of Fundy's fog and cool temperatures can occur any time of year.
What are the Reversing Falls?
A set of rapids where the extreme Bay of Fundy tides cause the Saint John River's current to reverse direction, best viewed at the turn of the tide.
Is the Saint John City Market worth visiting?
Yes — one of the oldest continuously operating farmers' markets in North America, with local seafood, baked goods and crafts in a historic timber-roofed building.
How far is Saint John from the rest of the Fundy coast?
St. Martins and the Fundy Trail Parkway are about 40 minutes away, while Fundy National Park is roughly 1.5 hours.
Is Saint John foggy?
Yes — its coastal position means fog is common, especially in summer mornings, though it often clears by midday.
Traveler reviews
★★★★☆
Timed our visit to the Reversing Falls around the tide change and you could genuinely see the current shift — a strange thing to watch.
Glenn T. · July 2024
★★★★★
The City Market was a great spot for lunch, and a day trip out to the Fundy Trail Parkway showed off some of the best coastal scenery we saw in the Maritimes.
Paulette V. · August 2023
★★★★☆
Foggy on arrival but cleared by lunchtime — Irving Nature Park was a peaceful walk along the coast afterwards.
Ronan K. · September 2024
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