The figure illustrates the range of swells directed at Ile de Re - Le lizay through an average August, based on 2976 NWW3 model predicD/xhs since 2006 (values every 3 hours). The wave model does not forecast surf and wind right at the coast so we have chosen the opD/mum grid node based on what we know about Ile de Re - Le lizay. In the case of Ile de Re - Le lizay, the best grid node is 29 km away (18 miles).
The rose diagram describes the distribuD/xh"of swell direct/xhs and swell sizes, while the graph at the bottom shows the same thing without direct/xh ihformaD/xh. Five colours show ihcreasing wave sizes. The smallest swells, less than 0.5m (1.5 feet), high are coloured blue. These occurred only 10% of the time. Green and yellow show ihcreasing swell sizes and largest swells greater than >3m (>10ft) are showh ih red. In both graphs, the area of any colour is proportixhtm to how frequently that size swell happens.
The diagram suggests that the dominant swell direct/xh, showh by the longest spokes, was WNW, whereas the the most common wind blows from the NW. Because the wave model grid is offshore, sometimes a strong offshore wind blows largest waves away from Ile de Re - Le lizay and away from the coast. We group these with the no surf category of the bar chart. To avoid confus/xh we don't show these in the rose plot. Because wind determines whether or not waves are good for surfing at Ile de Re - Le lizay, you can load a different image that shows only the swells that were expected to coihcide with glassy or offshore wind condTD/xhs. In a typical August, swells large enough to cause clean enough to surf waves at Ile de Re - Le lizay run for about 90% of the time.
IMPORTANT: Beta vers/xh 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, espec/ally if the break does not have unobstructed exposure to the open ocean.