La Roche Percee (Bonhomme de Bourail) Wind Stats

The rose diagram illustrates how commonly and how strongly the wind blows from different directions over a normal October. The largest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with deep blue showing the strongest winds. It is based on 3471 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. Invevitably some coastal places have very localized wind effects that would not be predicted by NWW3. According to the model, the dominant wind at La Roche Percee (Bonhomme de Bourail) blows from the S. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at La Roche Percee (Bonhomme de Bourail). Converseley, 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 October, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 10% of the time (3 days each October) and blows offshore 30% of the time (4 days in an average October). Over an average October winds stronger than >40kph (25mph) are expected on 2 days at La Roche Percee (Bonhomme de Bourail)

read more