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Zancudo ratings
Quality on a good day: 3.7
Consistency of Surf: 3.5
Difficulty Level: 3.0
Wind and Kite Surfing: 1.0
Crowds: 2.0

Overall: 2.6

See all 18 ratings

Based on 3 votes. Vote


Surf Report Feed

Zancudo Swell Statistics, September: Surf with Light or Offshore Winds

This image shows only the swells directed at Zancudo 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 illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. Green and yellow represent increasing swell sizes and red shows biggest swells greater than >3m (>10ft). In both graphs, the area of any colour is proportional to how commonly that size swell happens.

The diagram implies that the prevailing swell direction, shown by the largest spokes, was SSW, whereas the the prevailing wind blows from the W. 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 5% of the time, equivalent to 2 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal September but 5% of the time we expect swell in the range 2-3m (6.5-10ft) 5%, equivalent to (2 days). Taking into account the proportion of these swells that coincided with predicted offshore winds, and given the fact that Zancudo is quite sheltered from open water swells, we calculate that clean surf can be found at Zancudo about 5% of the time and that surf is messed up by onshore wind 5% of the time. This is means that we expect 3 days with waves in a typical September, of which 2 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.