St Ives Harbour Wall Wind Stats

The rose diagram illustrates how commonly and how strongly the wind blows from different directions through a typical August. 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 the darkest shade of blue. It is based on 3472 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to St Ives Harbour Wall, located 32 km away (20 miles). There are not enough 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 St Ives Harbour Wall blows from the W. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at St Ives Harbour Wall. Converseley, dominant spokes illustrate favoured directions, and the more deep blue, the stronger the wind. Spokes point in the direction the wind blows from. Over an average August, the model suggests that winds are light enough for the sea to be glassy (light blue) about 7% of the time (2 days each August) and blows offshore 60% of the time (4 days in an average August). In a typical August winds stronger than >40kph (25mph) are expected on 2 days at St Ives Harbour Wall

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