Saint John Weather Year-Round — Best Time to Visit
Saint John, Canada has cool weather year-round. The best time to visit is August (score: 77/100). Annual average high: 10°C, total rainfall: 1340mm.
When is the best time to visit Saint John?
77
August is the best month to visit Saint John with a travel score of 77/100 (Good).
Expect highs of 21.1°C, 9 rain days, and 9.9 hours of daily sunshine.
View August weather details →Travel Score by Month
33
Jan
39
Feb
44
Mar
53
Apr
62
May
68
Jun
74
Jul
77
Aug
70
Sep
59
Oct
47
Nov
36
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Saint John each month?
10°C
Avg High
3.3°C
Avg Low
1340mm
Annual Rain
How much rain does Saint John get?
Saint John receives 1340mm of rain annually. The wettest month is typically December with 134mm, while August is the driest.
What is the weather like each month in Saint John?
January
33
-2°C
Low: -10°C
12 rain days
Poor
February
39
-1°C
Low: -9°C
10 rain days
Poor
March
44
2°C
Low: -5°C
11 rain days
Mixed
April
53
8°C
Low: 1°C
12 rain days
Mixed
May
62
14°C
Low: 6°C
12 rain days
Good
June
68
18°C
Low: 11°C
12 rain days
Good
July
74
21°C
Low: 15°C
11 rain days
Good
August
Best time to visit77
21°C
Low: 15°C
9 rain days
Good
September
70
18°C
Low: 12°C
9 rain days
Good
October
59
13°C
Low: 7°C
10 rain days
Mixed
November
47
7°C
Low: 1°C
11 rain days
Mixed
December
36
2°C
Low: -5°C
12 rain days
Poor
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What cities are near Saint John?
Data based on 1994–2024 averages · Last updated: 2024-12-31