St. Catharines Weather Year-Round — Best Time to Visit
St. Catharines, Canada has cool weather year-round. The best time to visit is August (score: 82/100). Annual average high: 13.1°C, total rainfall: 935mm.
When is the best time to visit St. Catharines?
82
August is the best month to visit St. Catharines with a travel score of 82/100 (Excellent).
Expect highs of 25.3°C, 10 rain days, and 11.3 hours of daily sunshine.
View August weather details →Travel Score by Month
36
Jan
43
Feb
51
Mar
60
Apr
72
May
80
Jun
82
Jul
82
Aug
80
Sep
63
Oct
52
Nov
39
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in St. Catharines each month?
13.1°C
Avg High
6.7°C
Avg Low
935mm
Annual Rain
How much rain does St. Catharines get?
St. Catharines receives 935mm of rain annually. The wettest month is typically April with 95mm, while February is the driest.
What is the weather like each month in St. Catharines?
January
36
0°C
Low: -6°C
11 rain days
Poor
February
43
1°C
Low: -6°C
9 rain days
Mixed
March
51
5°C
Low: -2°C
10 rain days
Mixed
April
60
11°C
Low: 3°C
12 rain days
Good
May
72
18°C
Low: 10°C
11 rain days
Good
June
80
23°C
Low: 16°C
11 rain days
Excellent
July
82
26°C
Low: 19°C
10 rain days
Excellent
August
Best time to visit82
25°C
Low: 19°C
10 rain days
Excellent
September
80
22°C
Low: 16°C
9 rain days
Good
October
63
15°C
Low: 10°C
11 rain days
Good
November
52
9°C
Low: 3°C
10 rain days
Mixed
December
39
3°C
Low: -1°C
12 rain days
Poor
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Data based on 1994–2024 averages · Last updated: 2024-12-31