Avalanche Wind Statistics, Dezembro averages since 2006
The rose diagram illustrates how commonly and how strongly the wind blows from different directions over a normal December. The largest spokes point in the directions the wind most commonly blows from and the shade of blue implies the strength, with dark blue showing the strongest winds. It is based on 2457 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Avalanche, located 41 km away (25 miles). There are insufficient 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 Avalanche blows from the NNW. If the rose plot shows a nearly round shape, it means there is no strong bias in wind direction at Avalanche. 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. During a typical December, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 18% of the time (5 days each December) and blows offshore 57% of the time (17 days in an average December). Over an average December winds exceeding >40kph (25mph) are not expected, but 3 have winds on the range 30-40 (19-25) at Avalanche
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.