Strandfontein Wind Stats

The figure illustrates how often and how strongly the wind blows from different directions over a normal September. The biggest 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 strongest. It is based on 3360 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Strandfontein, located 32 km away (20 miles). There are too few 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 most common wind at Strandfontein 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 Strandfontein. 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 September, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 12% of the time (4 days each September) and blows offshore 24% of the time (7 days in an average September). Over an average September wind stronger than >40kph (25mph) was predicted for only a single days at Strandfontein

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