The figure describes how frequently and how strongly the wind blows from different directions through a typical northern hemisphere summer. The largest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with the darkest shade of blue showing the strongest winds. It is based on 5066 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Anse Salabouelle, located 35 km away (22 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 most common wind at Anse Salabouelle blows from the ENE. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Anse Salabouelle. Converseley, 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. Over an average northern hemisphere summer, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 0.9% of the time (1 days each northern hemisphere summer) and blows offshore just 1.4% of the time (1 days in an average northern hemisphere summer). In a typical northern hemisphere summer wind stronger than >40kph (25mph) was predicted for only a single days at Anse Salabouelle
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.