Taking the local weather in Salto Grande into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually December and September, with an average temperature of 23°C, while the coldest months are July and June, with an average of 19°C. The rainiest months in Salto Grande are January, February, December and November, with each month seeing an average of 210 mm of rainfall.