Dalmore Bay (Lewis) Wind Stats

The rose diagram shows 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 implies the strength, with the strongest winds shown by the darkest shade of blue. It is based on 2880 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Dalmore Bay (Lewis), located 26 km away (16 miles). There are not enough recording stations world wide to use actual wind data. Without question some coastal places have very localized wind effects that would not be predicted by NWW3. According to the model, the dominant wind at Dalmore Bay (Lewis) blows from the NW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Dalmore Bay (Lewis). 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. Over an average April, the model suggests that winds are light enough for the sea to be glassy (pale blue) about 5% of the time (2 days each April) and blows offshore 25% of the time (8 days in an average April). During a typical April winds stronger than >40kph (25mph) are expected on 4 days at Dalmore Bay (Lewis)

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