Surf Forecast Surf Report
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San Miguel - Ribeira Grande Surf Stats

All swells

(any wind direction)

Good Surf

(light / offshore wind)

The figure describes the combination of swells directed at San Miguel - Ribeira Grande through a typical March and is based upon 3460 NWW3 model predictions since 2007 (values every 3 hours). The wave model does not forecast surf and wind right at the coast so we have chosen the most applicable grid node based on what we know about San Miguel - Ribeira Grande. In this particular case the best grid node is 20 km away (12 miles). The rose diagram describes the distribution of swell sizes and swell direction, while the graph at the bottom shows the same thing without direction information. Five colours show increasing wave sizes. The smallest swells, less than 0.5m (1.5 feet), high are coloured blue. These happened only 24% of the time. Green and yellow show increasing swell sizes and red shows the highest swells, greater than >3m (>10ft). In each graph, the area of any colour is proportional to how often that size swell happens. The diagram indicates that the dominant swell direction, shown by the longest spokes, was NNW, whereas the the dominant wind blows from the WSW. Because the wave model grid is away from the coast, sometimes a strong offshore wind blows largest waves away from San Miguel - Ribeira Grande and out to sea. We lump these in with the no surf category of the bar chart. To avoid confusion we don't show these in the rose diagram. Because wind determines whether or not waves are surfable at San Miguel - Ribeira Grande, you can select a similar diagram that shows only the swells that were predicted to coincide with glassy or offshore wind conditions. Over an average March, swells large enough to cause good for surfing waves at San Miguel - Ribeira Grande run for about 71% of the time.

Also see San Miguel - Ribeira Grande wind stats

Compare San Miguel - Ribeira Grande with another surf break

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