August in Sanaa is the rainiest and the cloudiest month of the year. In August, the weather in Sanaa is typically warm. Average daily high temperature in August is about 24 degrees above zero. On average, Sanaa has 29 rainy, 1 sunny, and 1 partly cloudy day in August. The rains are usually heavy. August as well as July is considered the most uncomfortable time to visit Sanaa.