October in Gustavia is the rainiest month of the year. In October, the weather in Gustavia is typically hot. Average daily high temperature in October is about 28 degrees above zero. On average, Gustavia has 16 rainy, 14 sunny, and 1 partly cloudy day in October. The rains are usually heavy. October as well as August, September, and November is considered the most uncomfortable time to visit Gustavia.