Statistiques de Vent de Otago Peninsula - Allans Beach, moyennes sur Automne depuis 2006
This picture illustrates how often and how strongly the wind blows from different directions over a normal southern hemisphere autumn. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with dark blue showing the strongest winds. It is based on 6580 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Otago Peninsula - Allans Beach, located 21 km away (13 miles). There are insufficient recording stations world wide to use actual wind data. No doubt some coastal places have very localized wind effects that would not be predicted by NWW3.
According to the model, the dominant wind at Otago Peninsula - Allans Beach blows from the S. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Otago Peninsula - Allans Beach. By contrast, dominant spokes represent favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical southern hemisphere autumn, the model suggests that winds are light enough for the sea to be glassy (light blue) about 8% of the time (7 days each southern hemisphere autumn) and blows offshore 32% of the time (28 days in an average southern hemisphere autumn). Over an average southern hemisphere autumn winds stronger than >40kph (25mph) are expected on 9 days at Otago Peninsula - Allans 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.