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Machrihanish Surf Stats

All swells

(any wind direction)
Machrihanish.surf.statistics.julyW.animatedW.label.animated

Good Surf

(light / offshore wind)

This picture describes the combination of swells directed at Machrihanish through a typical July. It is based on 2976 NWW3 model predictions since 2008 (values every 3 hours). The wave model does not forecast surf and wind right at the coast so we have chosen the best grid node based on what we know about Machrihanish. In the case of Machrihanish, the best grid node is 18 km away (11 miles). The rose diagram shows the distribution of swell directions and swell sizes, while the graph at the bottom shows the same thing without direction information. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. These happened 49% of the time. Green and yellow show increasing swell sizes and red shows highest swells greater than >3m (>10ft). In both graphs, the area of any colour is proportional to how frequently that size swell occurs. The diagram suggests that the prevailing swell direction, shown by the largest spokes, was WNW, whereas the the dominant wind blows from the WSW. Because the wave model grid is out to sea, sometimes a strong offshore wind blows largest waves away from Machrihanish and offshore. We combine these with the no surf category of the bar chart. To keep it simple we don't show these in the rose diagram. Because wind determines whether or not waves are surfable at Machrihanish, you can load a different image that shows only the swells that were forecast to coincide with glassy or offshore wind conditions. Over an average July, swells large enough to cause good for surfing waves at Machrihanish run for about 51% of the time.

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  • Machrihanish.surf.statistics.juneW.animated
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  • Machrihanish.surf.statistics.novemberW.animated
  • Machrihanish.surf.statistics.decemberW.animated

Also see Machrihanish wind stats

Compare Machrihanish with another surf break