When to goSao Paulo is known for its tropical climate and has no extreme weather conditions. Simply put, Sao Paulo’s weather is usually pleasant and dry and never too hot. The winter months are from June to August while spring is from September through November. After that, summer begins and lasts until about June. Like most other tropical cities of the world, summer in Sao Paulo is characterized by humidity and brief but sudden downpours, which become increasingly frequent from March onwards. Thus, the best time to visit Sao Paulo is anywhere from September to March when you can soak up the sun and hit the beaches.