Acapulquito-Costa Azul Swell Statistics, January: Surf with Light or Offshore Winds
This image shows only the swells directed at Acapulquito-Costa Azul that coincided with light winds or offshore conditions over a normal January. It is based on 2372 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 both graphs, the area of any colour is proportional to how often that size swell occurs.
The diagram indicates that the dominant swell direction, shown by the largest spokes, was SSW, whereas the the prevailing wind blows from the NNW. 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 19% of the time, equivalent to 6 days. Open sea swells exceeding >3m (>10ft) are unlikely to happen in a normal January. Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Acapulquito-Costa Azul is exposed to open water swells, we calculate that clean surf can be found at Acapulquito-Costa Azul about 19% of the time and that surf is spoilt by onshore wind 2.0% of the time. This is means that we expect 7 days with waves in a typical January, of which 6 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.