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Gray Whale Cove ratings
Quality on a good day: 3.0
Consistency of Surf: 5.0
Difficulty Level: 4.0
Crowds: 4.0

Overall: 3.8

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Gray Whale Cove Swell Statistics, September: Surf with Light or Offshore Winds

This image shows only the swells directed at Gray Whale Cove that coincided with light winds or offshore conditions through a typical September. It is based on 2880 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 represents largest swells greater than >3m (>10ft). In each graph, the area of any colour is proportional to how commonly that size swell was forecast.

The diagram implies that the prevailing swell direction, shown by the largest spokes, was W, whereas the the most common wind blows from the WNW. 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 29% of the time, equivalent to 9 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal September but 16% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 16%, equivalent to (5 days). Taking into account the proportion of these swells that coincided with predicted offshore winds we estimate that clean surf can be found at Gray Whale Cove about 29% of the time and that surf is blown out by onshore wind 53% of the time. This is means that we expect 25 days with waves in a typical September, of which 9 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.