Rainbow Rocks Wind Stats

This image shows how commonly and how strongly the wind blows from different directions through a typical April. The biggest 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 3360 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Rainbow Rocks, located 17 km away (11 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 Rainbow Rocks blows from the WNW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Rainbow Rocks. Converseley, dominant spokes illustrate favoured directions, and the more the darkest shade of blue, the stronger the wind. Spokes point in the direction the wind blows from. Over an average April, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 14% of the time (4 days each April) and blows offshore 39% of the time (12 days in an average April). In a typical April winds stronger than >40kph (25mph) are expected on 3 days at Rainbow Rocks

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