The figure describes how commonly and how strongly the wind blows from different directions over a normal May. The largest 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 showing the strongest winds. It is based on 1734 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Derecha de la Caleta, located 25 km away (16 miles). There are too few 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 Derecha de la Caleta blows from the NNW. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Derecha de la Caleta. Converseley, dominant spokes show favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical May, the model suggests that winds are light enough for the sea to be glassy (light blue) about 6% of the time (2 days each May) and blows offshore 7% of the time (2 days in an average May). Over an average May winds exceeding >40kph (25mph) are not expected, but 4 have winds on the range 30-40 (19-25) at Derecha de la Caleta
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.