Similan Islands Wind Stats

The figure describes how frequently and how strongly the wind blows from different directions over a normal May. The largest spokes point in the directions the wind most commonly blows from and the shade of blue suggests the strength, with the darkest shade of blue strongest. It is based on 3422 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Similan Islands, located 17 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 Similan Islands blows from the WSW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Similan Islands. Converseley, dominant spokes show favoured directions, and the more the darkest shade of blue, the stronger the wind. Spokes point in the direction the wind blows from. During a typical May, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 21% of the time (7 days each May) and blows offshore 24% of the time (7 days in an average May). Over an average May wind stronger than >40kph (25mph) was predicted for only a single days at Similan Islands

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