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Cardiff Reef ratings
Quality on a good day: 3.3
Consistency of Surf: 4.0
Difficulty Level: 3.0
Wind and Kite Surfing: 1.0
Crowds: 2.3

Overall: 3.2

See all 18 ratings

Based on 5 votes. Vote


Surf Report Feed

Cardiff Reef Swell Statistics, August: Surf with Light or Offshore Winds

This image shows only the swells directed at Cardiff Reef that coincided with light winds or offshore conditions over a normal August. It is based on 2976 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours show increasing wave sizes. The smallest swells, less than 0.5m (1.5 feet), high are coloured blue. Green and yellow show increasing swell sizes and biggest swells greater than >3m (>10ft) are shown in red. In either graph, the area of any colour is proportional to how frequently that size swell was forecast.

The diagram suggests that the most common swell direction, shown by the longest spokes, was W (which was the same as the prevailing wind direction). The chart at the bottom shows the same thing but without direction information. For example, swells larger than 1.5 feet (0.5m) coincided with good wind conditions 1.8% of the time, equivalent to 1 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal August. Taking into account the ratio of these swells that coincided with forecast offshore winds, and given the fact that Cardiff Reef is exposed to open water swells, we calculate that clean surf can be found at Cardiff Reef about 1.8% of the time and that surf is messed up by onshore wind 1.2% of the time. This is means that we expect 1 days with waves in a typical August, of which 1 days should be surfable.

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.