Sri Lanka Wind Stats

This image shows how commonly 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 darkest shade of blue showing the strongest winds. It is based on 3360 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Sri Lanka, located 34 km away (21 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 most common wind at Sri Lanka blows from the SSW. If the rose diagram shows a close to circular outline, it means there is no strong bias in wind direction at Sri Lanka. 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 (the lightest shade of blue) about 26% of the time (8 days each April) and blows offshore 35% of the time (9 days in an average April). During a typical April winds exceeding >40kph (25mph) are not expected, but 1 have winds on the range 30-40 (19-25) at Sri Lanka

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