May in Ashtarak is the rainiest month of the year. In May, the weather in Ashtarak is typically warm. Average daily high temperature in May is about 15 degrees above zero. On average, Ashtarak has 20 rainy, 9 sunny, and 2 partly cloudy days in May. The rains are usually heavy. May as well as March and April is considered the most uncomfortable time to visit Ashtarak.