Tahunanui bar Wind Stats

The graph shows how often 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 suggests the strength, with dark blue strongest. 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 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 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. By contrast, dominant spokes show 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 10% of the time (3 days each July) and blows offshore 24% of the time (1 days in an average July). Over an average July winds stronger than >40kph (25mph) are expected on 2 days at Tahunanui bar

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