La Roche Percee (Bonhomme de Bourail) Wind Stats

This picture describes how often and how strongly the wind blows from different directions through a typical August. The largest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with the darkest shade of blue showing the strongest winds. It is based on 3472 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to La Roche Percee (Bonhomme de Bourail), located 44 km away (27 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 most common wind at La Roche Percee (Bonhomme de Bourail) blows from the SSW. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at La Roche Percee (Bonhomme de Bourail). By contrast, dominant spokes illustrate favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. Over an average August, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 13% of the time (4 days each August) and blows offshore 30% of the time (5 days in an average August). During a typical August winds exceeding >40kph (25mph) are not expected, but 3 have winds on the range 30-40 (19-25) at La Roche Percee (Bonhomme de Bourail)

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