Llandanwg Wind Stats

This picture illustrates how frequently and how strongly the wind blows from different directions over a normal June. The largest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with deep blue showing the strongest winds. It is based on 3503 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Llandanwg, located 45 km away (28 miles). There are insufficient 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 Llandanwg blows from the SW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Llandanwg. By contrast, dominant spokes illustrate favoured directions, and the more the darkest shade of blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical June, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 14% of the time (4 days each June) and blows offshore 20% of the time (0 days in an average June). Over an average June wind stronger than >40kph (25mph) was forecast for only a single days at Llandanwg

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