July in Caldas da Rainha is the sunniest month of the year. In July, the weather in Caldas da Rainha is typically warm. Average daily high temperature in July is about 23 degrees above zero. On average, Caldas da Rainha has 30 sunny and 1 partly cloudy day in July. July as well as June, August, and September is considered the most comfortable time to visit Caldas da Rainha.