Statistiques de Houle pour Arinaga, Juillet: Vagues avec Vents Légers ou Favorables.
This image shows only the swells directed at Arinaga that coincided with light winds or offshore conditions through a typical July and is based upon 2480 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 biggest swells greater than >3m (>10ft) are shown in red. In either graph, the area of any colour is proportional to how frequently that size swell was forecast.
The diagram suggests that the dominant swell direction, shown by the longest spokes, was N (which was the same as the prevailing wind direction). 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 0% of the time, equivalent to 0 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal July. Taking into account the proportion of these swells that coincided with predicted offshore winds, and given the fact that Arinaga is quite sheltered from open water swells, we estimate that clean surf can be found at Arinaga about 0% of the time and that surf is blown out by onshore wind 12% of the time. This is means that we expect 4 days with waves in a typical July, of which 0 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.