Taking the local weather in Zapotitlán de Méndez into account can help you maximise your time at the pool during your trip. The hottest months are usually May and April, with an average temperature of 18°C, while the coldest months are January and December, with an average of 14°C. The rainiest months in Zapotitlán de Méndez are September, June, July and August, with each month seeing an average of 375 mm of rainfall.