Average monthly wind speed in Bethesda (MD)

The mean monthly wind speed over the year in Bethesda (Maryland), the United States of America.

Wind speed in Bethesda varies across the year, ranging from 4 m/s (8 knots) to 5 m/s (10 knots).

The 4 m/s (8 knots) average in May, June, July, August, September, October, November and December means Bethesda experiences consistent moderate winds. Conditions vary from calm periods around to more active episodes throughout the month. At typical wind levels, smaller trees show steady branch movement. In common units, 4 m/s (8 knots) equals 14.4 km/h or 8.9 mph. While generally comfortable for most activities, occasional windy days may affect your plans and can make the air feel cooler.

Wind speeds average 5 m/s (10 knots) in , marking the windiest months of the year. The air is often steady and noticeable throughout the month, though occasional stronger gusts or brief calms may occur. Windy conditions are typical during this period, making it a great time for activities like windsurfing and kitesurfing.

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