July in Barbados (International Airport) is the sunniest month of the year. In July, the weather in Barbados (International Airport) is typically hot. Average daily high temperature in July is about 28 degrees above zero. On average, Barbados (International Airport) has 16 sunny and 15 rainy days in July. The rains are usually heavy. July as well as June, August, September, and October is considered the most uncomfortable time to visit Barbados (International Airport).