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Big Bay ratings
Quality on a good day: 3.8
Consistency of Surf: 3.6
Difficulty Level: 2.8
Wind and Kite Surfing: 4.6
Crowds: 2.0

Overall: 4.0

See all 18 ratings

Based on 9 votes. Vote


Surf Report Feed

Big Bay Swell Statistics, September: Surf with Light or Offshore Winds

This image shows only the swells directed at Big Bay that coincided with light winds or offshore conditions over a normal September and is based upon 2880 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours represent increasing wave sizes. Very small swells of less than 0.5m (1.5 feet) high are shown in blue. Green and yellow illustrate increasing swell sizes and red shows biggest swells greater than >3m (>10ft). In either graph, the area of any colour is proportional to how commonly that size swell happens.

The diagram implies that the most common swell direction, shown by the longest spokes, was SW (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 43% of the time, equivalent to 13 days. Expect open water swells to exceed >3m (>10ft) 12% of the time (4 days). Taking into account the ratio of these swells that coincided with predicted offshore winds, and given the fact that Big Bay is exposed to open water swells, we estimate that clean surf can be found at Big Bay about 43% of the time and that surf is messed up by onshore wind 55% of the time. This is means that we expect 29 days with waves in a typical September, of which 13 days should be clean enough to surf.

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.