Anse a La Gourde Swell Statistics, Marzo: Surf with Light or Offshore Winds
This image shows only the swells directed at Anse a La Gourde that coincided with light winds or offshore conditions through a typical March. It is based on 2220 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours represent increasing wave sizes. Very small swells of less than 0.5m (1.5 feet) high are shown in blue. Green and yellow illustrate increasing swell sizes and red shows largest swells greater than >3m (>10ft). In either 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 longest spokes, was NNE, whereas the the most common wind blows from the E. 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 2% of the time, equivalent to 1 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal March. Taking into account the ratio of these swells that coincided with predicted offshore winds, and given the fact that Anse a La Gourde is exposed to open water swells, we calculate that clean surf can be found at Anse a La Gourde about 2% of the time and that surf is spoilt by onshore wind 94% of the time. This is means that we expect 30 days with waves in a typical March, of which 1 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.