August in Zamboanga is the windiest month of the year. In August, the weather in Zamboanga is typically warm. Average daily high temperature in August is about 27 degrees above zero. On average, Zamboanga has 27 rainy, 2 cloudy, 1 sunny, and 1 partly cloudy day in August. The rains are usually heavy. August as well as January, March, April, and May is considered the most uncomfortable time to visit Zamboanga.