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Baie de Douarnenez ratings
Quality on a good day: 3.0
Consistency of Surf: 3.0
Difficulty Level: 2.0
Crowds: 3.0

Overall: 3.0

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Surf Report Feed

Baie de Douarnenez Swell Statistics, September: Surf with Light or Offshore Winds

This image shows only the swells directed at Baie de Douarnenez that coincided with light winds or offshore conditions over a normal September and is based upon 2400 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 illustrates largest swells greater than >3m (>10ft). In either graph, the area of any colour is proportional to how commonly that size swell happens.

The diagram implies that the most common swell direction, shown by the biggest spokes, was W, whereas the the most common wind blows from the NW. 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 15% of the time, equivalent to 4 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal September but 12% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 12%, equivalent to (4 days). Taking into account the fraction of these swells that coincided with expected offshore winds, and given the fact that Baie de Douarnenez is slightly protected from open water swells, we calculate that clean surf can be found at Baie de Douarnenez about 15% of the time and that surf is spoilt by onshore wind 50% of the time. This is means that we expect 20 days with waves in a typical September, 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.