Santa Maria - Anjos Swell Statistics, All Year: Surf with Light or Offshore Winds
This image shows only the swells directed at Santa Maria - Anjos that coincided with light winds or offshore conditions through a typical 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 illustrate increasing swell sizes and red illustrates the largest 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 dominant swell direction, shown by the biggest spokes, was NW (which was the same as the most common wind direction). 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 18% of the time, equivalent to 66 days. Expect open water swells to exceed >3m (>10ft) 0.6% of the time (2 days). Taking into account the fraction of these swells that coincided with predicted offshore winds, and given the fact that Santa Maria - Anjos is exposed to open water swells, we think that that clean surf can be found at Santa Maria - Anjos about 18% of the time and that surf is spoilt by onshore wind 50% of the time. This is means that we expect 248 days with waves in a typical year, of which 66 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.