St Jean de Monts Wind Stats

The graph describes how often and how strongly the wind blows from different directions over a normal April. 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 3360 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to St Jean de Monts, located 31 km away (19 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 prevailing wind at St Jean de Monts blows from the W. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at St Jean de Monts. 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 April, the model suggests that winds are light enough for the sea to be glassy (light blue) about 10% of the time (3 days each April) and blows offshore 39% of the time (11 days in an average April). Over an average April wind stronger than >40kph (25mph) was predicted for only a single days at St Jean de Monts

read more