May in Itabaiana is the rainiest and the cloudiest month of the year. In May, the weather in Itabaiana is typically warm. Average daily high temperature in May is about 27 degrees above zero. On average, Itabaiana has 18 rainy, 9 sunny, 3 partly cloudy, and 1 cloudy day in May. The rains are usually heavy. May as well as April, June, and July is considered the most uncomfortable time to visit Itabaiana.