Saint Catharines weather in August 2025

The temperatures in Saint Catharines in August are comfortable with low of 19°C and and high up to 25°C.

You can expect about 3 to 8 days of rain in Saint Catharines during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Saint Catharines in August 2025.

If you’re planning to visit Saint Catharines in the near future, we highly recommend that you review the 14 day weather forecast for Saint Catharines before you arrive.

Temperatures

25° / 19°

Rainy Days

Snowy Days

Dry Days

Rainfall

148

Sun Hours

8.4

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
					1 27° /19°	2 25° /19°
3 27° /19°	4 26° /20°	5 25° /19°	6 25° /18°	7 27° /18°	8 23° /19°	9 24° /17°
10 23° /18°	11 23° /16°	12 25° /17°	13 24° /17°	14 23° /17°	15 23° /17°	16 25° /17°
17 25° /17°	18 22° /17°	19 24° /15°	20 24° /16°	21 24° /18°	22 22° /16°	23 24° /17°
24 25° /17°	25 25° /18°	26 23° /17°	27 25° /18°	28 24° /15°	29 23° /18°	30 25° /18°
31 23° /16°

Explore the weather in Saint Catharines in other months

Saint Catharines annual weather

Month	Temperatures	Rainy Days	Dry Days	Snowy Days	Rainfall	Weather	More details
January	-2° / -6°	8	7	18	102 mm	Awful	Saint Catharines in January
February	-1° / -6°	7	5	17	109 mm	Awful	Saint Catharines in February
March	4° / -2°	10	11	10	114 mm	Awful	Saint Catharines in March
April	10° / 3°	9	17	4	139 mm	Awful	Saint Catharines in April
May	16° / 9°	8	23	0	147 mm	Ok	Saint Catharines in May
June	21° / 14°	7	23	0	158 mm	Ok	Saint Catharines in June
July	25° / 18°	8	23	0	156 mm	Good	Saint Catharines in July
August	25° / 19°	7	24	0	148 mm	Good	Saint Catharines in August
September	22° / 15°	6	24	0	113 mm	Good	Saint Catharines in September
October	15° / 10°	9	22	1	135 mm	Ok	Saint Catharines in October
November	8° / 3°	8	16	6	95 mm	Awful	Saint Catharines in November
December	2° / -1°	9	8	15	109 mm	Awful	Saint Catharines in December

Temperatures in Saint Catharines in August

Rain in Saint Catharines in August

Weather in Saint Catharines in August - FAQ

What is the average temperature in Saint Catharines in August?

The average temperature in Saint Catharines in August is 19/25° C.

What is the chance of rain in Saint Catharines in August?

On average, there are 7 rainy days in Saint Catharines during August.

Weather wise, is August a good time to visit Saint Catharines?

The weather in Saint Catharines in August is good.

Can it snow in Saint Catharines in August?

On average, there are 0 snowy days in Saint Catharines in August.

More about the weather in Saint Catharines