Rivermouth (Hikkaduwa) Wind Stats

This image shows how commonly and how strongly the wind blows from different directions through a typical September. The biggest 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 3360 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Rivermouth (Hikkaduwa), located 18 km away (11 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 prevailing wind at Rivermouth (Hikkaduwa) blows from the SSW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Rivermouth (Hikkaduwa). 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. Over an average September, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 3% of the time (1 days each September) and blows offshore just 3% of the time (1 days in an average September). During a typical September winds exceeding >40kph (25mph) are not expected, but 2 have winds on the range 30-40 (19-25) at Rivermouth (Hikkaduwa)

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