When the climate in Michoacan turns rain-forest grade in late August and September, for me and the family, dousing in the shower every hour followed by constant high intensity fan air is the really single effective way to handle things. Some transplants give up. The first hot summer is not the crucial one. It's after spending several summers down here that norte-norte americanos throw in the towel. After acclimatizing it is cruel to go north and freeze while locals stare. I can barely handle a night where the temperature drops into the fifties. And that is with a mattress pad heater. Colder means, more blankets and twist the mattress pad dial way up. It's tougher on us older folks.