Chiton Rocks Wind Stats

The rose diagram shows how commonly and how strongly the wind blows from different directions over a normal August. The largest 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 the darkest shade of blue. It is based on 3472 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Chiton Rocks, located 53 km away (33 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 dominant wind at Chiton Rocks blows from the SSW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Chiton Rocks. By contrast, dominant spokes show favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical August, the model suggests that winds are light enough for the sea to be glassy (light blue) about 5% of the time (2 days each August) and blows offshore 33% of the time (10 days in an average August). Over an average August winds stronger than >40kph (25mph) are expected on 5 days at Chiton Rocks

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