Airport Rights Swell Statistics, Maio: Surf with Light or Offshore Winds
This image shows only the swells directed at Airport Rights that coincided with light winds or offshore conditions through a typical May and is based upon 2200 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 biggest swells, greater than >3m (>10ft). In each graph, the area of any colour is proportional to how often that size swell occurs.
The diagram indicates that the prevailing swell direction, shown by the largest spokes, was SSW, 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 94% of the time, equivalent to 29 days. Open sea swells exceeding >3m (>10ft) are unlikely to happen in a normal May but 51% of the time we expect swell in the range 2-3m (6.5-10ft) 51%, equivalent to (16 days). Taking into account the proportion of these swells that coincided with predicted offshore winds, and given the fact that Airport Rights is exposed to open water swells, we think that that clean surf can be found at Airport Rights about 94% of the time and that surf is spoilt by onshore wind 5% of the time. This is means that we expect 31 days with waves in a typical May, of which 29 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.