The temperatures in Niagara Falls in August are comfortable with low of 19°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Niagara Falls 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 Niagara Falls in August 2025.
If you’re planning to visit Niagara Falls in the near future, we highly recommend that you review the 14 day weather forecast for Niagara Falls before you arrive.
Temperatures
26° / 19°
Rainy Days
7
Snowy Days
0
Dry Days
24
Rainfall
161
mm
Sun Hours
11.1
Hrs
