The temperatures in Iguazu in September are comfortable with low of 17°C and and high up to 29°C.
You can expect about 3 to 8 days of rain in Iguazu during the month of September. 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 Iguazu in September 2025.
If you’re planning to visit Iguazu in the near future, we highly recommend that you review the 14 day weather forecast for Iguazu before you arrive.
Temperatures
29° / 17°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
129
mm
Sun Hours
10.4
Hrs