Kahalu'u Wind Stats

This picture illustrates how often and how strongly the wind blows from different directions through a typical April. The largest 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 3360 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Kahalu'u, located 10 km away (6 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 prevailing wind at Kahalu'u blows from the W. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Kahalu'u. By contrast, 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 April, the model suggests that winds are light enough for the sea to be glassy (light blue) about 16% of the time (5 days each April) and blows offshore 19% of the time (5 days in an average April). During a typical April winds exceeding >40kph (25mph) are not expected, but 0 have winds on the range 30-40 (19-25) at Kahalu'u

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