Arroyo Laguna Swell Statistics, All Year: Surf with Light or Offshore Winds
This image shows only the swells directed at Arroyo Laguna that coincided with light winds or offshore conditions over a normal year. It is based on 28044 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 red illustrates largest swells greater than >3m (>10ft). In each graph, the area of any colour is proportional to how often that size swell happens.
The diagram indicates that the dominant swell direction, shown by the largest spokes, was SW, whereas the the most common wind blows from the NW. 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 6% of the time, equivalent to 22 days. Open water swells exceeding >3m (>10ft) only arise 0.2% of the time in a typical year, equivalent to just one day but 1.3% of the time we expect swell in the range 2-3m (6.5-10ft) 1.3%, equivalent to (5 days). Taking into account the ratio of these swells that coincided with expected offshore winds, and given the fact that Arroyo Laguna is exposed to open water swells, we calculate that clean surf can be found at Arroyo Laguna about 6% of the time and that surf is spoilt by onshore wind 22% of the time. This is means that we expect 102 days with waves in a typical year, of which 22 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.