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Banks Peninsula - Magnet Bay Surf Stats

All swells

(any wind direction)
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Good Surf

(light / offshore wind)

The graph illustrates the range of swells directed at Banks Peninsula - Magnet Bay through an average December. It is based on 3448 NWW3 model predictions since 2006 (values every 3 hours). The wave model does not forecast wind or surf right at the coastline so we have chosen the optimum grid node based on what we know about Banks Peninsula - Magnet Bay. In this particular case the best grid node is 21 km away (13 miles). The rose diagram describes the distribution of swell directions and swell sizes, while the graph at the bottom shows the same thing without direction information. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. These were forecast only 42% of the time. Green and yellow represent increasing swell sizes and largest swells greater than >3m (>10ft) are shown in red. In either 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 SSE, whereas the the most common wind blows from the NE. Because the wave model grid is out to sea, sometimes a strong offshore wind blows largest waves away from Banks Peninsula - Magnet Bay and offshore. We lump these in with the no surf category of the bar chart. To avoid confusion we don't show these in the rose graph. Because wind determines whether or not waves are good for surfing at Banks Peninsula - Magnet Bay, you can view an alternative image that shows only the swells that were forecast to coincide with glassy or offshore wind conditions. In a typical December, swells large enough to cause clean enough to surf waves at Banks Peninsula - Magnet Bay run for about 58% of the time.

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Also see Banks Peninsula - Magnet Bay wind stats

Compare Banks Peninsula - Magnet Bay with another surf break