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Gnaraloo ratings
Quality on a good day: 2.0
Consistency of Surf: 4.0
Difficulty Level: 4.0
Crowds: 4.0

Overall: 3.3

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Gnaraloo Surf Stats

All swells

(any wind direction)
Gnaraloo.surf.statistics.aprilSw.animatedSw.label.animated

Good Surf

(light / offshore wind)

This chart describes the range of swells directed at Gnaraloo through a typical April, based on 3120 NWW3 model predictions since 2007 (values every 3 hours). The wave model does not forecast wind or surf right at the coast so we have chosen the best grid node based on what we know about Gnaraloo. In this particular case the best grid node is 29 km away (18 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 represent increasing wave sizes. Very small swells of less than 0.5m (1.5 feet) high are shown in blue. These were forecast only 2% of the time. Green and yellow represent increasing swell sizes and red illustrates the highest swells, greater than >3m (>10ft). In either graph, the area of any colour is proportional to how commonly that size swell happens. The diagram implies that the most common swell direction, shown by the largest spokes, was WSW, whereas the the dominant wind blows from the S. Because the wave model grid is offshore, sometimes a strong offshore wind blows largest waves away from Gnaraloo and away from the coast. We lump these in with the no surf category of the bar chart. To simplify things we don't show these in the rose graph. Because wind determines whether or not waves are good for surfing at Gnaraloo, you can view an alternative image that shows only the swells that were predicted to coincide with glassy or offshore wind conditions. Over an average April, swells large enough to cause clean enough to surf waves at Gnaraloo run for about 98% of the time.

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  • Gnaraloo.surf.statistics.marchSw.animated
  • Gnaraloo.surf.statistics.aprilSw.animated
  • Gnaraloo.surf.statistics.maySw.animated
  • Gnaraloo.surf.statistics.juneSw.animated
  • Gnaraloo.surf.statistics.julySw.animated
  • Gnaraloo.surf.statistics.augustSw.animated
  • Gnaraloo.surf.statistics.septemberSw.animated
  • Gnaraloo.surf.statistics.octoberSw.animated
  • Gnaraloo.surf.statistics.novemberSw.animated
  • Gnaraloo.surf.statistics.decemberSw.animated

Also see Gnaraloo wind stats

Compare Gnaraloo with another surf break

We hope you find the new 12-day forecasts and additional details useful.

Kudos to everyone who helped us debug this over the past 3 months.

Be sure to click on the Advanced Surf option to see extra details about the sea-state. Look out for crossing swells and short period local wind swells and chop that will often spoil a groundswell even if the wind is perfect. As yet there is no allowance for this in the swell rating. This is something we are working on.