July in Peterhead is the warmest month of the year. In July, the weather in Peterhead is typically warm. Average daily high temperature in July is about 15 degrees above zero. On average, Peterhead has 20 rainy, 6 sunny, 4 cloudy, and 1 partly cloudy day in July. The rains are usually moderate. July as well as January, February, March, and April is considered the most uncomfortable time to visit Peterhead.