Llantwit Major Wind Stats

The figure describes how frequently and how strongly the wind blows from different directions over a normal June. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with the strongest winds shown by dark blue. It is based on 3505 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Llantwit Major, located 36 km away (22 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 dominant wind at Llantwit Major blows from the WSW. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Llantwit Major. By contrast, dominant spokes illustrate favoured directions, and the more deep 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 (light blue) about 16% of the time (5 days each June) and blows offshore 28% of the time (0 days in an average June). Over an average June wind stronger than >40kph (25mph) was predicted for only a single days at Llantwit Major

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