In August, the weather in Pekan Baru is typically hot. Average daily high temperature in August is about 31 degrees above zero. On average, Pekan Baru has 23 rainy, 5 partly cloudy, 2 cloudy, and 1 sunny day in August. The rains are usually heavy. August as well as January, February, March, and April is considered the most uncomfortable time to visit Pekan Baru.