Backwash Wind Statistics, March averages since 2006
This image illustrates how often and how strongly the wind blows from different directions over a normal March. The largest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with dark blue showing the strongest winds. It is based on 1972 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Backwash, located 26 km away (16 miles). There are not enough recording stations world wide to use actual wind data. Invevitably some coastal places have very localized wind effects that would not be predicted by NWW3.
According to the model, the prevailing wind at Backwash blows from the SSW. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at Backwash. On the other hand, dominant spokes illustrate favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical March, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 58% of the time (18 days each March) and blows offshore 64% of the time (7 days in an average March). Over an average March winds exceeding >40kph (25mph) are not expected, but 0 have winds on the range 30-40 (19-25) at Backwash
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.