Port Mansfield Jetty Wind Stats

This picture illustrates how frequently and how strongly the wind blows from different directions through a typical August. 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 3590 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Port Mansfield Jetty, located 29 km away (18 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 prevailing wind at Port Mansfield Jetty blows from the ESE. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Port Mansfield Jetty. By contrast, dominant spokes show 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 August, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 8% of the time (2 days each August) and blows offshore 10% of the time (1 days in an average August). During a typical August winds exceeding >40kph (25mph) are not expected, but 4 have winds on the range 30-40 (19-25) at Port Mansfield Jetty

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