Statistiques de Houle pour Anglet - Les Cavaliers, Automne: Vagues avec Vents Légers ou Favorables.
This image shows only the swells directed at Anglet - Les Cavaliers that coincided with light winds or offshore conditions through a typical northern hemisphere autumn and is based upon 7251 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours represent increasing wave sizes. Very small swells of less than 0.5m (1.5 feet) high are shown in blue. Green and yellow represent increasing swell sizes and red shows largest swells greater than >3m (>10ft). In either graph, the area of any colour is proportional to how frequently that size swell was forecast.
The diagram suggests that the most common swell direction, shown by the longest spokes, was WNW, whereas the the most common wind blows from the SW. 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 36% of the time, equivalent to 33 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal northern hemisphere autumn but 5% of the time we expect swell in the range 2-3m (6.5-10ft) 5%, equivalent to (5 days). Taking into account the ratio of these swells that coincided with predicted offshore winds, and given the fact that Anglet - Les Cavaliers is exposed to open water swells, we think that that clean surf can be found at Anglet - Les Cavaliers about 36% of the time and that surf is messed up by onshore wind 53% of the time. This is means that we expect 81 days with waves in a typical northern hemisphere autumn, of which 33 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.