May in Baia Mare is the rainiest and the sunniest month of the year. In May, the weather in Baia Mare is typically warm. Average daily high temperature in May is about 20 degrees above zero. On average, Baia Mare has 16 rainy, 10 sunny, and 5 partly cloudy days in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Baia Mare.