Ribeira da Janela Wind Stats

This picture describes how often and how strongly the wind blows from different directions through a typical April. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue indicates the strength, with dark blue showing the strongest winds. It is based on 3360 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Ribeira da Janela, located 22 km away (14 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 Ribeira da Janela 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 Ribeira da Janela. On the other hand, dominant spokes show 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 April, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 10% of the time (3 days each April) and blows offshore 18% of the time (5 days in an average April). During a typical April wind stronger than >40kph (25mph) was forecast for only a single days at Ribeira da Janela

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