Estadísticas de Olas para San Miguel - Areias, Invierno: Olas con Vientos Ligeros o Terrales
This image shows only the swells directed at San Miguel - Areias that coincided with light winds or offshore conditions over a normal northern hemisphere winter. It is based on 6931 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 shows largest swells greater than >3m (>10ft). In each graph, the area of any colour is proportional to how frequently that size swell was forecast.
The diagram suggests that the prevailing swell direction, shown by the biggest spokes, was NW, whereas the the most common wind blows from the SW. 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 29% of the time, equivalent to 26 days. Expect open water swells to exceed >3m (>10ft) 4% of the time (4 days). Taking into account the ratio of these swells that coincided with expected offshore winds, and given the fact that San Miguel - Areias is slightly protected from open water swells, we think that that clean surf can be found at San Miguel - Areias about 29% of the time and that surf is spoilt by onshore wind 44% of the time. This is means that we expect 66 days with waves in a typical northern hemisphere winter, of which 26 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.