Hood River, which is located at the base of Mt Hood, is the town which has the most windsurfing activity. It is located about 60 miles East of Portland Oregon. The closest international airport is in Portland but there are small airports in Hood River and The Dalles. There is also an international airport in Seattle, which is 4-5 hours drive from Hood River. Early season starts in April or early May and lasts through August.
West wind is most common with many windy days.
Late season starts in September and goes through November with West and East wind days and more no wind days. Windsight has provided some data on sailable days for the year 1994. A sailable day is defined by them as a day that contained a 3 hour time period where the one minute wind speed average was 15 MPH or greater. This calculation does not include wind gusts. For a day to be considered sailable there only had to be one place on the river that met the above specifications.