Balneario Camboriu has a Koppen Cfa type climate with moderate humidity around the year and rather hot summers. The winters are rather pleasant but the early hours of winter days can have really low temperatures.
Summers (December - March): December to March is summer season with February and March being the warmest and the driest months in Balneario Camboriu. The average temperature is 25 degrees Celsius even though the temperature can rise high enough to touch 40 degrees Celsius.
Winter (June - September): Most of the rainfall is received during winters. There is no distinguished rainy season. The average temperature is 15 degrees Celsius. The early morning temperatures can fluctuate from 0 degrees Celsius to 4 degrees Celsius.
Spring (November): November is the Spring season with a rather pleasant climate with mild temperatures. The average temperature is around 21 degrees Celsius- making it a good time to visit the city.
Rainy season: Rains intermingle with the winter season and is not considered a distinguished season in Brazil. Do know that the city is subjected to floods rather often. Do check the weather forecast before you book your tickets.
The best time to visit Balneario Camboriu is during Summer and Spring season. Do avoid mid-winters.