In October, the weather in Cabo de Santo Agostinho is typically warm. Average daily high temperature in October is about 27 degrees above zero. On average, Cabo de Santo Agostinho has 19 rainy, 9 partly cloudy, and 3 sunny days in October. The rains are usually light. October as well as January, February, March, and April is considered the most uncomfortable time to visit Cabo de Santo Agostinho.