Taking the local weather in San Augusto 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 April and May, with an average temperature of 21°C, while the coldest months are July and August, with an average of 21°C. The rainiest months in San Augusto are March, April, January and February, with each month seeing an average of 661 mm of rainfall.