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Whistling Sands (Porth Oer) ratings
Quality on a good day: 2.0
Consistency of Surf: 2.5
Difficulty Level: 2.0
Wind and Kite Surfing: 1.0
Crowds: 2.5

Overall: 2.4

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Whistling Sands (Porth Oer) Swell Statistics, July: All Swell – Any Wind

This chart describes the variation of swells directed at Whistling Sands (Porth Oer) over a normal July and is based upon 2976 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 best grid node based on what we know about Whistling Sands (Porth Oer). In the case of Whistling Sands (Porth Oer), the best grid node is 24 km away (15 miles).

The rose diagram describes the distribution of swell sizes and directions, 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 happened 56% of the time. Green and yellow represent increasing swell sizes and highest swells greater than >3m (>10ft) are shown in red. In each graph, the area of any colour is proportional to how frequently that size swell was forecast.

The diagram suggests that the dominant swell direction, shown by the largest spokes, was SW, whereas the the dominant wind blows from the WSW. Because the wave model grid is away from the coast, sometimes a strong offshore wind blows largest waves away from Whistling Sands (Porth Oer) and out to sea. We combine these 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 clean enough to surf at Whistling Sands (Porth Oer), you can select a similar diagram that shows only the swells that were expected to coincide with glassy or offshore wind conditions. During a typical July, swells large enough to cause surfable waves at Whistling Sands (Porth Oer) run for about 1.0% 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.