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Crab Island ratings
Quality on a good day: 3.5
Consistency of Surf: 3.0
Difficulty Level: 3.0
Crowds: 2.0
Accommodation: 4.0

Overall: 2.9

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Based on 2 votes. Vote


Surf Report Feed

Crab Island Swell Statistics, December: Surf with Light or Offshore Winds

This image shows only the swells directed at Crab Island that coincided with light winds or offshore conditions over a normal December. It is based on 2953 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 largest swells greater than >3m (>10ft) are shown in red. In each graph, the area of any colour is proportional to how frequently that size swell happens.

The diagram suggests that the most common swell direction, shown by the longest spokes, was WSW (which was the same as the most common wind direction). 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 13% of the time, equivalent to 4 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal December. Taking into account the proportion of these swells that coincided with expected offshore winds, and given the fact that Crab Island is exposed to open water swells, we estimate that clean surf can be found at Crab Island about 13% of the time and that surf is messed up by onshore wind 66% of the time. This is means that we expect 24 days with waves in a typical December, 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.