Longchamps Wind Stats

The figure describes how frequently and how strongly the wind blows from different directions through a typical September. The longest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with dark blue showing the strongest winds. It is based on 3353 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Longchamps, located 41 km away (25 miles). There are insufficient recording stations world wide to use actual wind data. Without question some coastal places have very localized wind effects that would not be predicted by NWW3. According to the model, the dominant wind at Longchamps blows from the WNW. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Longchamps. On the other hand, dominant spokes represent favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. Over an average September, the model suggests that winds are light enough for the sea to be glassy (light blue) about 10% of the time (3 days each September) and blows offshore 20% of the time (3 days in an average September). During a typical September winds stronger than >40kph (25mph) are expected on 2 days at Longchamps

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