Aan Wind Statistics, Spring averages since 2006
The rose diagram shows how commonly and how strongly the wind blows from different directions through a typical southern hemisphere spring. The longest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with dark blue strongest. It is based on 7252 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Aan, located 23 km away (14 miles). There are too few 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 Aan blows from the SW. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Aan. 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. Over an average southern hemisphere spring, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 13% of the time (12 days each southern hemisphere spring) and blows offshore 18% of the time (14 days in an average southern hemisphere spring). In a typical southern hemisphere spring winds exceeding >40kph (25mph) are not expected, but 3 have winds on the range 30-40 (19-25) at Aan
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.