Coastal Oregon in September offers a unique transitional period between summer and fall. Typically, daytime temperatures range from the mid-50s to the mid-60s Fahrenheit (12-18 degrees Celsius), creating comfortable conditions for outdoor activities. While sunshine is still prevalent, visitors should anticipate occasional rain showers and cloudy periods, characteristic of the Pacific Northwest climate. Ocean temperatures remain cool, generally in the low to mid-50s Fahrenheit (10-13 degrees Celsius).
This time of year presents an ideal balance for those seeking a less crowded coastal experience compared to the peak summer months. Lower visitor numbers contribute to a more tranquil atmosphere for exploring beaches, tide pools, and hiking trails. September also marks the beginning of the “second summer” on the Oregon coast, a period of warmer, drier weather that can extend into October. Historically, September has been a favored time for local residents to enjoy the coast after the summer tourist season concludes.