Waihau Bay Wind Stats

This chart shows how commonly and how strongly the wind blows from different directions over a normal July. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with the strongest winds shown by deep blue. It is based on 3472 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Waihau Bay, located 15 km away (9 miles). There are not enough recording stations world wide to use actual wind data. Invevitably some coastal places have very localized wind effects that would not be predicted by NWW3. According to the model, the prevailing wind at Waihau Bay blows from the N. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Waihau Bay. On the other hand, dominant spokes represent favoured directions, and the more deep blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical July, the model suggests that winds are light enough for the sea to be glassy (light blue) about 1.6% of the time (0 days each July) and blows offshore just 6% of the time (1 days in an average July). Over an average July winds stronger than >40kph (25mph) are expected on 3 days at Waihau Bay

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