Overview: São LuísSão Luís (Brazil) in general has a tropical climate. Temperatures during the day are in the range from 30 °C (86 °F) in March to 32 °C (90 °F) in November. The highest night temperatures could be experienced in December with 24 °C (75 °F), the lowest in July with 23 °C (73 °F). The driest month is October with just 3 days of rain, on the contrary, the month when it rains the most is March with 27 days of rain.