August in Pamplona is the sunniest and the warmest month of the year. In August, the weather in Pamplona is typically warm. Average daily high temperature in August is about 23 degrees above zero. On average, Pamplona has 14 sunny, 13 partly cloudy, 3 rainy, and 1 cloudy day in August. The rains are usually light. August as well as July is considered the most comfortable time to visit Pamplona.