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Carrapateira ratings
Quality on a good day: 3.0
Consistency of Surf: 3.0
Difficulty Level: 4.0
Crowds: 2.5

Overall: 3.6

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Carrapateira Swell Statistics, Autumn: Surf with Light or Offshore Winds

This image shows only the swells directed at Carrapateira that coincided with light winds or offshore conditions over a normal northern hemisphere autumn and is based upon 7252 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. Green and yellow show increasing swell sizes and red represents the largest swells, greater than >3m (>10ft). In each graph, the area of any colour is proportional to how often that size swell happens.

The diagram indicates that the most common swell direction, shown by the longest spokes, was WNW, whereas the the most common wind blows from the NNW. 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 30% of the time, equivalent to 27 days. Open water swells exceeding >3m (>10ft) only arise 0.7% of the time in a typical northern hemisphere autumn, equivalent to just one day but 8% of the time we expect swell in the range 2-3m (6.5-10ft) 8%, equivalent to (7 days). Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Carrapateira is exposed to open water swells, we calculate that clean surf can be found at Carrapateira about 30% of the time and that surf is blown out by onshore wind 65% of the time. This is means that we expect 86 days with waves in a typical northern hemisphere autumn, of which 27 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.