Second Beach (Port St Johns) Wind Stats

This image illustrates how often and how strongly the wind blows from different directions over a normal June. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue implies the strength, with deep blue showing the strongest winds. It is based on 3266 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Second Beach (Port St Johns), located 41 km away (25 miles). There are insufficient 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 dominant wind at Second Beach (Port St Johns) blows from the SE. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Second Beach (Port St Johns). On the other hand, 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 June, the model suggests that winds are light enough for the sea to be glassy (light blue) about 6% of the time (2 days each June) and blows offshore 18% of the time (6 days in an average June). Over an average June wind stronger than >40kph (25mph) was expected for only a single days at Second Beach (Port St Johns)

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