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Cortez Bank ratings
Quality on a good day: 5.0
Consistency of Surf: 3.0
Difficulty Level: 4.0
Crowds: 4.0

Overall: 3.4

See all 18 ratings

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Surf Report Feed

Cortez Bank Swell Statistics, November: Surf with Light or Offshore Winds

This image shows only the swells directed at Cortez Bank that coincided with light winds or offshore conditions over a normal November. It is based on 2801 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 illustrate increasing swell sizes and red represents highest 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 most common swell direction, shown by the largest spokes, was WNW, whereas the the dominant 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 26% of the time, equivalent to 8 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal November but 9% of the time we expect swell in the range 2-3m (6.5-10ft) 9%, equivalent to (3 days). Taking into account the proportion of these swells that coincided with expected offshore winds we calculate that clean surf can be found at Cortez Bank about 26% of the time and that surf is blown out by onshore wind 70% of the time. This is means that we expect 29 days with waves in a typical November, of which 8 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.