This chart shows how commonly and how strongly the wind blows from different directions over a normal northern hemisphere autumn. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue implies the strength, with the darkest shade of blue strongest. It is based on 5142 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Ogmore-by-Sea, located 25 km away (16 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 Ogmore-by-Sea blows from the WSW. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at Ogmore-by-Sea. 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. During a typical northern hemisphere autumn, the model suggests that winds are light enough for the sea to be glassy (light blue) about 7% of the time (6 days each northern hemisphere autumn) and blows offshore 21% of the time (0 days in an average northern hemisphere autumn). Over an average northern hemisphere autumn winds stronger than >40kph (25mph) are expected on 9 days at Ogmore-by-Sea
IMPORTANT: Beta version feature! Swell heights are open water values from NWW3. There is no attempt to model near-shore effects. Coastal wave heights will generally be less, especially if the break does not have unobstructed exposure to the open ocean.