June in Haddington is the cloudiest month of the year. In June, the weather in Haddington is typically warm. Average daily high temperature in June is about 14 degrees above zero. On average, Haddington has 22 rainy, 6 cloudy, and 2 sunny days in June. The rains are usually heavy. June as well as January, February, March, and April is considered the most uncomfortable time to visit Haddington.