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China Walls ratings
Quality on a good day: 3.5
Consistency of Surf: 3.2
Difficulty Level: 3.8
Wind and Kite Surfing: 2.0
Crowds: 3.2

Overall: 3.5

See all 18 ratings

Based on 4 votes. Vote


Surf Report Feed

China Walls Swell Statistics, May: Surf with Light or Offshore Winds

This image shows only the swells directed at China Walls that coincided with light winds or offshore conditions through a typical May. It is based on 2200 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. Green and yellow show increasing swell sizes and red shows biggest swells greater than >3m (>10ft). 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 S, whereas the the prevailing wind blows from the ENE. 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 54% of the time, equivalent to 17 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal May but 18% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 18%, equivalent to (6 days). Taking into account the proportion of these swells that coincided with forecast offshore winds, and given the fact that China Walls is exposed to open water swells, we estimate that clean surf can be found at China Walls about 54% of the time and that surf is spoilt by onshore wind 10% of the time. This is means that we expect 20 days with waves in a typical May, of which 17 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.