Seabrook Beach Wind Statistics, August averages since 2006
The figure shows how commonly and how strongly the wind blows from different directions over a normal August. The longest spokes point in the directions the wind most commonly blows from and the shade of blue implies the strength, with dark blue showing the strongest winds. It is based on 1983 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Seabrook Beach, located 29 km away (18 miles). There are not enough recording stations world wide to use actual wind data. Without question some coastal places have very localized wind effects that would not be predicted by NWW3.
According to the model, the prevailing wind at Seabrook Beach blows from the ESE. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Seabrook Beach. On the other hand, dominant spokes represent favoured directions, and the more the darkest shade of blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical August, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 12% of the time (4 days each August) and blows offshore 41% of the time (10 days in an average August). Over an average August winds exceeding >40kph (25mph) are not expected, but 1 have winds on the range 30-40 (19-25) at Seabrook Beach
IMPORTANT: Beta version feature! Swell heights are open water values from NWW3. There is no attempt to model near-shore effects. Coastal wave heights will generally be less, especially if the break does not have unobstructed exposure to the open ocean.