August in Bastrop is the hottest month of the year. In August, the weather in Bastrop is typically hot. Average daily high temperature in August is about 34 degrees above zero. On average, Bastrop has 15 sunny, 13 partly cloudy, and 3 rainy days in August. The rains are usually light. August as well as January, February, June, and July is considered the most uncomfortable time to visit Bastrop.