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Saint John

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Saint John Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Saint John year round climate

  • Spring (March–May): Average 26.3–27.9°C, warm and comfortable climate with relatively low rainfall. Common activities: Beach relaxation, water sports. Recommended clothing: Light short-sleeved clothing, shorts, sandals.
  • Summer (June–August): Average 28.0–28.3°C, hot and humid climate with higher rainfall. Common activities: Swimming, sunbathing, outdoor adventures. Recommended clothing: Light and breathable clothing, sun-protective clothing, hats.
  • Autumn (September–November): Average 28.1–27.4°C, warm climate, with the most rainfall in November. Common activities: Outdoor walks, sightseeing. Recommended clothing: Long-sleeved shirts, light jackets.
  • Winter (December–February): Average 25.9–26.3°C, warm climate with relatively low rainfall. Common activities: Beach walks, visiting local cultural attractions. Recommended clothing: Light long-sleeved clothing, light jackets.

Saint John climatological average

Annual average temperature: approx. 27.3°C / Annual rainfall: approx. 1198 mm / Summer humidity: 70%–80% / Rainiest month: November

Saint John monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
25.9°C
39.7
February
26°C
39.7
March
26.3°C
37.3
April
27°C
80.3
May
27.9°C
34
June
28.2°C
110.7
July
28°C
121.3
August
28.3°C
140.7
September
28.3°C
142.3
October
28.1°C
172.7
November
27.4°C
190
December
26.3°C
90

Saint John weather for the next seven days

9/30
Wednesday
Patchy rain nearby
28.8°C/27°C
10/1
Thursday
Sunny
29.2°C/27.7°C
10/2
Friday
Overcast
28.9°C/27.4°C
10/3
Saturday
Patchy rain nearby
29.3°C/27.6°C
10/4
Sunday
Patchy rain nearby
29.3°C/27.7°C
10/5
Monday
Patchy rain nearby
29.2°C/27.8°C
10/6
Tuesday
Patchy rain nearby
29.2°C/27.7°C

Saint John Frequently Asked Questions and Useful Information for Travel

What is the best month to visit Saint John?

For a balance of pleasant weather and fewer crowds in Saint John, April and May are often considered ideal. The peak season from December to March offers the most stable weather and a vibrant atmosphere, but it is also the busiest and most expensive time. The quietest and most affordable period is the off-season from July to October, though this time comes with higher humidity and a greater chance of rain and potential storm systems.

Is Saint John worth a visit?

Yes, Saint John is a worthwhile destination. Canada's oldest incorporated city, it is known for its historic uptown streetscapes, cultural attractions, and natural wonders. Popular sights include the Reversing Rapids, where the Bay collides with the Saint John River, creating a unique tidal phenomenon.

What are the main attractions in Saint John?

Saint John offers a variety of attractions including the historic Uptown Saint John with its charming streets and Victorian architecture, the iconic Reversing Rapids, the scenic Saint John River, and the beautiful coastline. You can also explore local markets, museums, and art galleries that showcase the city's rich history and culture.

What kind of atmosphere can I expect in Saint John?

Saint John offers a welcoming and historic atmosphere. It's a city that embraces its past with well-preserved architecture and a strong sense of community. Visitors can enjoy a relaxed pace while exploring its cultural offerings and natural surroundings.

What are some unique experiences in Saint John?

Unique experiences in Saint John include witnessing the extraordinary Reversing Rapids, exploring the historic Market Square, and discovering the city's maritime heritage. You can also enjoy the natural beauty of the nearby coastline and the vibrant local arts scene.