Airport Rights Golf Statistieken, August: Golven met Licht of Offshore Winden
This image shows only the swells directed at Airport Rights that coincided with light winds or offshore conditions through a typical August. It is based on 2480 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 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 most common swell direction, shown by the biggest spokes, was SW, whereas the the prevailing wind blows from the ESE. 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 100% of the time, equivalent to 31 days. Open water swells exceeding >3m (>10ft) only occur 2% of the time in a typical August, equivalent to just one day but 69% of the time we expect swell in the range 2-3m (6.5-10ft) 69%, equivalent to (21 days). Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Airport Rights is exposed to open water swells, we calculate that clean surf can be found at Airport Rights about 100% of the time and that surf is messed up by onshore wind 0% of the time. This is means that we expect 31 days with waves in a typical August, of which 31 days should be clean enough to surf.
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.