Shelter Island Wind Stats

This picture illustrates how often and how strongly the wind blows from different directions over a normal April. The longest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with deep blue strongest. It is based on 3360 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Shelter Island, located 28 km away (17 miles). There are too few 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 prevailing wind at Shelter Island blows from the ENE. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Shelter Island. On the other hand, dominant spokes illustrate favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical April, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 1.4% of the time (0 days each April) and blows offshore just 3% of the time (0 days in an average April). Over an average April winds exceeding >40kph (25mph) are not expected, but 1 have winds on the range 30-40 (19-25) at Shelter Island

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