Statistiques de Vent de Arica, moyennes sur Octobre depuis 2006
This picture describes how frequently and how strongly the wind blows from different directions through a typical October. The longest 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 deep blue. It is based on 2480 NWW3 forecasts of wind since since 2006, at 3hr intervals, for the closest NWW3 model node to Arica, located 27 km away (17 miles). There are not enough recording stations world wide to use actual wind data. Without question some coastal places have very localized wind effects that would not be predicted by NWW3.
According to the model, the prevailing wind at Arica blows from the SSW. If the rose graph shows a fairly circular pattern, it means there is no strong bias in wind direction at Arica. On the other hand, dominant spokes represent favoured directions, and the more dark blue, the stronger the wind. Spokes point in the direction the wind blows from. Over an average October, the model suggests that winds are light enough for the sea to be glassy (the lightest shade of blue) about 0.4% of the time (0 days each October) and blows offshore just 0.4% of the time (0 days in an average October). In a typical October winds exceeding >40kph (25mph) are not expected, but 1 have winds on the range 30-40 (19-25) at Arica
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.