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Dalmore Bay (Lewis) ratings
Quality on a good day: 4.0
Consistency of Surf: 3.5
Difficulty Level: 4.0
Wind and Kite Surfing: 2.0
Crowds: 4.0

Overall: 3.5

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Dalmore Bay (Lewis) Swell Statistics, Summer: All Swell – Any Wind

The figure illustrates the variation of swells directed at Dalmore Bay (Lewis) through an average northern hemisphere summer. It is based on 8738 NWW3 model predictions since 2006 (values every 3 hours). The wave model does not forecast wind or surf right at the coast so we have chosen the optimum grid node based on what we know about Dalmore Bay (Lewis). In the case of Dalmore Bay (Lewis), the best grid node is 26 km away (16 miles).

The rose diagram shows the distribution of swell sizes and swell direction, while the graph at the bottom shows the same thing but without direction information. Five colours show increasing wave sizes. The smallest swells, less than 0.5m (1.5 feet), high are coloured blue. These occurred only 35% of the time. Green and yellow illustrate increasing swell sizes and red represents largest swells greater than >3m (>10ft). In both graphs, the area of any colour is proportional to how commonly that size swell occurs.

The diagram implies that the most common swell direction, shown by the largest spokes, was WNW, whereas the the most common wind blows from the SW. Because the wave model grid is away from the coast, sometimes a strong offshore wind blows largest waves away from Dalmore Bay (Lewis) and out to sea. We combine these with the no surf category of the bar chart. To avoid confusion we don't show these in the rose graph. Because wind determines whether or not waves are surfable at Dalmore Bay (Lewis), you can load a different image that shows only the swells that were forecast to coincide with glassy or offshore wind conditions. In a typical northern hemisphere summer, swells large enough to cause good for surfing waves at Dalmore Bay (Lewis) run for about 65% of the time.

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.