The temperatures in Rosario in August are quite cold with temperatures between 9°C and 19°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Rosario 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 Rosario in August 2025.
If you’re planning to visit Rosario in the near future, we highly recommend that you review the 14 day weather forecast for Rosario before you arrive.
Temperatures
19° / 9°
Rainy Days
3
Snowy Days
0
Dry Days
28
Rainfall
73
mm
Sun Hours
10.4
Hrs
