In June, the weather in Barbados (International Airport) is typically hot. Average daily high temperature in June is about 28 degrees above zero. On average, Barbados (International Airport) has 18 rainy, 10 sunny, 1 cloudy, and 1 partly cloudy day in June. The rains are usually heavy. June as well as July, August, September, and October is considered the most uncomfortable time to visit Barbados (International Airport).