Sao Mateus, Brazil experiences a mild climate year-round, with temperatures ranging from pleasant highs in the summer months to cool lows in winter. The city's warmest season is during the Australian summer equivalent period, December to February, where temperatures frequently reach 34°C. From March to May, the temperature drops slightly, but still averages around 25-26°C. During the colder months of June to August, temperatures decrease significantly, ranging from 14-21°C, making it Sao Mateus' coolest season. Autumn and spring periods show moderate temperatures, averaging 24-26°C, with September being one of the warmer months.