Ponta dos Castelhanos Wind Stats

The rose diagram illustrates how frequently and how strongly the wind blows from different directions over a normal July. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue implies the strength, with the strongest winds shown by deep blue. It is based on 3720 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Ponta dos Castelhanos, located 27 km away (17 miles). There are too few recording stations world wide to use actual wind data. No doubt some coastal places have very localized wind effects that would not be predicted by NWW3. According to the model, the dominant wind at Ponta dos Castelhanos blows from the SSE. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at Ponta dos Castelhanos. By contrast, dominant spokes illustrate favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical July, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 3% of the time (1 days each July) and blows offshore just 6% of the time (2 days in an average July). Over an average July winds exceeding >40kph (25mph) are not expected, but 1 have winds on the range 30-40 (19-25) at Ponta dos Castelhanos

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