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Green Hills ratings
Quality on a good day: 2.0
Consistency of Surf: 3.0
Difficulty Level: 1.0
Crowds: 4.0

Overall: 2.8

See all 18 ratings

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Surf Report Feed

Green Hills Swell Statistics, All Year: All Swell – Any Wind

The rose diagram describes the combination of swells directed at Green Hills through a typical year and is based upon 34628 NWW3 model predictions since 2006 (values every 3 hours). The wave model does not forecast wind or surf right at the shore so we have chosen the optimum grid node based on what we know about Green Hills, and at Green Hills the best grid node is 31 km away (19 miles).

The rose diagram shows 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 were forecast only 44% of the time. Green and yellow represent increasing swell sizes and red shows the highest swells, greater than >3m (>10ft). In either graph, the area of any colour is proportional to how frequently that size swell happens.

The diagram suggests that the prevailing swell direction, shown by the largest spokes, was SSE (which was the same as the dominant wind direction). Because the wave model grid is out to sea, sometimes a strong offshore wind blows largest waves away from Green Hills and offshore. We group these with the no surf category of the bar chart. To simplify things we don't show these in the rose diagram. Because wind determines whether or not waves are surfable at Green Hills, you can select a similar diagram that shows only the swells that were expected to coincide with glassy or offshore wind conditions. Over an average year, swells large enough to cause good for surfing waves at Green Hills run for about 56% of the time.

IMPORTANT: Beta version 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, especially if the break does not have unobstructed exposure to the open ocean.