Mandiri Wind Statistics, January averages since 2006
The graph describes how frequently and how strongly the wind blows from different directions through a typical January. The biggest 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 1967 NWW3 forecasts of wind since since 2007, at 3hr intervals, for the closest NWW3 model node to Mandiri, located 28 km away (17 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 most common wind at Mandiri blows from the SSW. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at Mandiri. On the other hand, dominant spokes represent favoured directions, and the more the darkest shade of blue, the stronger the wind. Spokes point in the direction the wind blows from. Over an average January, 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 January) and blows offshore 24% of the time (7 days in an average January). In a typical January winds exceeding >40kph (25mph) are not expected, but 2 have winds on the range 30-40 (19-25) at Mandiri
IMPORTANT: Beta version feature! Swell heights are open water values from NWW3. There is no attempt to model near-shore effects. Coastal wave heights will generally be less, especially if the break does not have unobstructed exposure to the open ocean.