You'll likely spend much of your trip indoors, but if you want to see more of the area, looking at local weather trends is a good idea. The hottest months are usually September and October, with an average temperature of 25°C, while the coldest months are July and June, with an average of 22°C. The rainiest months in Concepcion are February, January, December and March, with each month seeing an average of 210 mm of rainfall.