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Itaipu Surf Stats

All swells

(any wind direction)
Itaipu rio.surf.statistics.februarySw.animatedSw.label.animated

Good Surf

(light / offshore wind)

The graph describes the combination of swells directed at Itaipu through an average February, based on 3120 NWW3 model predictions since 2007 (values every 3 hours). The wave model does not forecast wind and surf right at the coastline so we have chosen the best grid node based on what we know about Itaipu. In this particular case the best grid node is 5 km away (3 miles). The rose diagram shows the distribution of swell sizes and directions, 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 were forecast only 55% of the time. Green and yellow show increasing swell sizes and red shows highest swells greater than >3m (>10ft). In each graph, the area of any colour is proportional to how frequently that size swell occurs. The diagram suggests that the most common swell direction, shown by the largest spokes, was S, whereas the the dominant wind blows from the ENE. Because the wave model grid is out to sea, sometimes a strong offshore wind blows largest waves away from Itaipu and offshore. We lump these in 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 Itaipu, you can view an alternative image that shows only the swells that were expected to coincide with glassy or offshore wind conditions. In a typical February, swells large enough to cause good for surfing waves at Itaipu run for about 45% of the time.

  • Itaipu rio.surf.statistics.januarySw.animated
  • Itaipu rio.surf.statistics.februarySw.animated
  • Itaipu rio.surf.statistics.marchSw.animated
  • Itaipu rio.surf.statistics.aprilSw.animated
  • Itaipu rio.surf.statistics.maySw.animated
  • Itaipu rio.surf.statistics.juneSw.animated
  • Itaipu rio.surf.statistics.julySw.animated
  • Itaipu rio.surf.statistics.augustSw.animated
  • Itaipu rio.surf.statistics.septemberSw.animated
  • Itaipu rio.surf.statistics.octoberSw.animated
  • Itaipu rio.surf.statistics.novemberSw.animated
  • Itaipu rio.surf.statistics.decemberSw.animated

Also see Itaipu wind stats

Compare Itaipu with another surf break