Average monthly wind speed in Portland (OR)

On this page you will find more information about the mean monthly wind speed over the year in Portland (Oregon), the United States of America.

Annually, wind speeds in Portland vary between 2 m/s (4 knots) at their lowest and 4 m/s (8 knots) at their peak.

During September and October, Portland maintains a 2 m/s (4 knots) wind speed average, producing gentle air movement. Some days will be calm while others may experience more wind. At the average speed, you'll feel light air pressure on exposed skin and observe subtle leaf movement. Converting to familiar units, this equals 7.2 km/h or 4.5 mph. Despite occasional breezes, the wind is usually light enough to spend time outdoors.

Wind speeds reach an average of 4 m/s (8 knots) in January; this is the windiest time of the year. This means that on some days, the air is a strong breeze. There may still be stronger gusts or calmer moments, but windy conditions are the norm during this month.

For more detailed information about Portland’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Portland climate page.