Taking the local weather in Barra do Sahy into account can help you maximise your time at the pool during your trip. The hottest months are usually February and January, with an average temperature of 25°C, while the coldest months are July and August, with an average of 20°C. The rainiest months in Barra do Sahy are January, February, March and December, with each month seeing an average of 267 mm of rainfall.