August in Navarre is the rainiest, the cloudiest, and the hottest month of the year. In August, the weather in Navarre is typically hot. Average daily high temperature in August is about 30 degrees above zero. On average, Navarre has 18 rainy, 10 sunny, and 3 partly cloudy days in August. The rains are usually heavy. August as well as July is considered the most uncomfortable time to visit Navarre.