Porth Colmon Wind Stats

The rose diagram illustrates how frequently and how strongly the wind blows from different directions through a typical July. The biggest spokes point in the directions the wind most commonly blows from and the shade of blue implies the strength, with dark blue strongest. It is based on 3720 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Porth Colmon, located 18 km away (11 miles). There are not enough 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 Porth Colmon blows from the SW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Porth Colmon. Converseley, dominant spokes represent favoured directions, and the more deep blue, the stronger the wind. Spokes point in the direction the wind blows from. Over an average July, the model suggests that winds are light enough for the sea to be glassy (light blue) about 11% of the time (3 days each July) and blows offshore 29% of the time (0 days in an average July). In a typical July wind stronger than >40kph (25mph) was expected for only a single days at Porth Colmon

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