Tahunanui bar Wind Stats

This chart illustrates how frequently and how strongly the wind blows from different directions over a normal May. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with deep blue showing the strongest winds. It is based on 3181 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 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 Tahunanui bar blows from the NNW. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Tahunanui bar. 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. During a typical May, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 13% of the time (4 days each May) and blows offshore 23% of the time (1 days in an average May). Over an average May winds stronger than >40kph (25mph) are expected on 2 days at Tahunanui bar

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