Tahunanui bar Wind Stats

The figure describes how commonly and how strongly the wind blows from different directions through a typical August. The longest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with deep blue showing the strongest winds. It is based on 2976 NWW3 forecasts of wind since since 2008, at 3hr intervals, for the closest NWW3 model node to Tahunanui bar, located 36 km away (22 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 most common wind at Tahunanui bar blows from the NNW. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at Tahunanui bar. Converseley, dominant spokes represent favoured directions, and the more deep 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 (light blue) about 12% of the time (4 days each August) and blows offshore 28% of the time (1 days in an average August). In a typical August winds stronger than >40kph (25mph) are expected on 2 days at Tahunanui bar

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