Taking the local weather in Uruguaiana 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 January and February, with an average temperature of 25°C, while the coldest months are July and June, with an average of 15°C. The rainiest months in Uruguaiana are October, December, November and January, with each month seeing an average of 179 mm of rainfall.