Aberdeen Wind Statistics, April averages since 2006
The figure shows how often and how strongly the wind blows from different directions through a typical April. The longest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with dark blue strongest. It is based on 2160 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Aberdeen, located 20 km away (12 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 Aberdeen blows from the SE. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Aberdeen. On the other hand, dominant spokes represent favoured directions, and the more deep blue, the stronger the wind. Spokes point in the direction the wind blows from. Over an average April, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 5% of the time (2 days each April) and blows offshore 15% of the time (4 days in an average April). During a typical April wind stronger than >40kph (25mph) was forecast for only a single days at Aberdeen
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.