Santo Andre's climate is mild, with temperatures rarely dropping below freezing or soaring above scorching highs. Winters are cool and dry, with temperatures ranging from 8-29°C in April and May, while springs are mild, averaging 20°C in September and November. Summers are warm, with highs often reaching 33°C, but still pleasant overall, averaging 22-24°C between January and March. Autumns are similar to springs, with comfortable temperatures ranging from 12-32°C. The coldest month is July, averaging a chilly 15°C, while the hottest months vary, peaking in September at 20°C on average.