May in As is the rainiest month of the year. In May, the weather in As is typically warm. Average daily high temperature in May is about 16 degrees above zero. On average, As has 15 rainy, 7 partly cloudy, 5 cloudy, and 4 sunny days in May. The rains are usually moderate. May as well as January, February, March, and April is considered the most uncomfortable time to visit As.