October in Blumenau is the windiest and the cloudiest month of the year. In October, the weather in Blumenau is typically warm. Average daily high temperature in October is about 21 degrees above zero. On average, Blumenau has 23 rainy, 4 sunny, 3 cloudy, and 1 partly cloudy day in October. The rains are usually heavy. October as well as January, February, March, and November is considered the most uncomfortable time to visit Blumenau.