Estadísticas de Viento para Barra do Douro, Promedio de Verano desde 2006

The graph describes how often and how strongly the wind blows from different directions through a typical northern hemisphere summer. The longest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with the strongest winds shown by the darkest shade of blue. It is based on 8738 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Barra do Douro, located 32 km away (20 miles). There are not enough recording stations world wide to use actual wind data. Without question some coastal places have very localized wind effects that would not be predicted by NWW3.

According to the model, the prevailing wind at Barra do Douro blows from the WNW. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at Barra do Douro. On the other hand, 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. Over an average northern hemisphere summer, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 14% of the time (13 days each northern hemisphere summer) and blows offshore 17% of the time (15 days in an average northern hemisphere summer). In a typical northern hemisphere summer winds stronger than >40kph (25mph) are expected on 3 days at Barra do Douro

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.