Statistiques de Houle pour Arguineguin, Toute l'Année: Vagues avec Vents Légers ou Favorables.
The rose diagram shows only the swells directed at Arguineguin that coincided with light winds or offshore conditions through a typical year and is based upon 28044 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours show increasing wave sizes. The smallest swells, less than 0.5m (1.5 feet), high are coloured blue. Green and yellow show increasing swell sizes and red represents the largest swells, greater than >3m (>10ft). In both graphs, the area of any colour is proportional to how often that size swell happens.
The diagram indicates that the prevailing swell direction, shown by the longest spokes, was SSW, whereas the the most common wind blows from the NNE. The chart at the bottom shows the same thing but without direction information. For example, swells larger than 1.5 feet (0.5m) coincided with good wind conditions 10% of the time, equivalent to 36 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal year but 1.7% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 1.7%, equivalent to (6 days). Taking into account the ratio of these swells that coincided with forecast offshore winds, and given the fact that Arguineguin is exposed to open water swells, we calculate that clean surf can be found at Arguineguin about 10% of the time and that surf is blown out by onshore wind 1.0% of the time. This is means that we expect 40 days with waves in a typical year, of which 36 days should be surfable.
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.