Porthcurno Wind Stats

The figure shows how commonly and how strongly the wind blows from different directions over a normal July. The longest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with the strongest winds shown by dark blue. It is based on 3720 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Porthcurno, located 13 km away (8 miles). There are insufficient 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 prevailing wind at Porthcurno blows from the W. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at Porthcurno. On the other hand, 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 July, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 7% of the time (2 days each July) and blows offshore 35% of the time (4 days in an average July). Over an average July wind stronger than >40kph (25mph) was predicted for only a single days at Porthcurno

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