Arguineguin Golf Statistieken, Lente: Golven met Licht of Offshore Winden
This image shows only the swells directed at Arguineguin that coincided with light winds or offshore conditions over a normal northern hemisphere spring. It is based on 6580 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. Green and yellow represent increasing swell sizes and red illustrates the highest swells, greater than >3m (>10ft). In either graph, the area of any colour is proportional to how commonly that size swell was forecast.
The diagram implies that the most common swell direction, shown by the biggest spokes, was SSW, whereas the the dominant wind blows from the N. 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 8% of the time, equivalent to 7 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal northern hemisphere spring. Taking into account the ratio of these swells that coincided with predicted 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 8% of the time and that surf is spoilt by onshore wind 3% of the time. This is means that we expect 10 days with waves in a typical northern hemisphere spring, of which 7 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.