Typical Weather in Portland, OR in August

80° F Avg High

58° F Avg Low

2 Rainy Days

☀️ Temperature Summary

August is a popular time of year to visit, with an inviting climate characterized by warm temperatures. Compared to other months, Portland experiences cooler conditions in August, with daytime highs averaging 80°F. Overnight lows will be around 58°F on average. This is the hottest month of the year in Portland.

The warm, dry temperatures in August make Portland a great destination to relax and soak up the sun.

High Temps Throughout the Year

☔ Rain Summary

In August you can expect close to a 6% chance of rain for any given day. It rains less than usual in August, with total rainfall for the month typically near 1 inches.