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Aln Estuary ratings
Quality on a good day: 2.0
Consistency of Surf: 3.0
Difficulty Level: 1.0

Overall: 2.6

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Surf Report Feed

Aln Estuary Swell Statistics, December: Surf with Light or Offshore Winds

This image shows only the swells directed at Aln Estuary that coincided with light winds or offshore conditions through a typical December. It is based on 2455 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 largest swells greater than >3m (>10ft) are shown in red. In each graph, the area of any colour is proportional to how often that size swell occurs.

The diagram indicates that the most common swell direction, shown by the biggest spokes, was NE, whereas the the most common wind blows from the WSW. 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 14% of the time, equivalent to 4 days. Open sea swells exceeding >3m (>10ft) are unlikely to happen in a normal December but 10% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 10%, equivalent to (3 days). Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Aln Estuary is slightly protected from open water swells, we estimate that clean surf can be found at Aln Estuary about 14% of the time and that surf is messed up by onshore wind 9% of the time. This is means that we expect 7 days with waves in a typical December, of which 4 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.