Vaucottes Swell Statistics, January: Surf with Light or Offshore Winds
The rose diagram shows only the swells directed at Vaucottes that coincided with light winds or offshore conditions over a normal January and is based upon 2371 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 represents the highest swells, greater than >3m (>10ft). In each graph, the area of any colour is proportional to how frequently that size swell occurs.
The diagram suggests that the most common swell direction, shown by the longest spokes, was SW (which was the same as the dominant 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 14% of the time, equivalent to 4 days. Open sea swells exceeding >3m (>10ft) are unlikely to happen in a normal January. Taking into account the proportion of these swells that coincided with forecast offshore winds, and given the fact that Vaucottes is exposed to open water swells, we think that that clean surf can be found at Vaucottes about 14% of the time and that surf is blown out by onshore wind 58% of the time. This is means that we expect 22 days with waves in a typical January, of which 4 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.