Saint John weather in September
Mild and comfortable, with occasional showers. Average highs of 19°C and lows of 12°C, with around 9 rainy days expected throughout the month.
While September isn't our top-rated month for Saint John, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
19°C
Average low
12°C
Rainy days
9 days
Best months to visit
Year-round
What to do in Saint John in September
Whatever the weather, Saint John rewards curious visitors. Here are some of the best ways to spend your time:
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
What to pack for September
Layer up — a mid-weight jacket, jumpers, and comfortable trousers. Waterproof shoes are recommended. Scarves and gloves may be useful in the evenings.
Browse other months
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 (you are here)
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.
Book your September trip to Saint John
Find hotels, tours and experiences for the perfect escape.
