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Nungwi Reefs ratings
Quality on a good day: 2.0
Consistency of Surf: 3.0
Difficulty Level: 1.0
Crowds: 5.0

Overall: 2.6

See all 18 ratings

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Surf Report Feed

Nungwi Reefs Swell Statistics, November: Surf with Light or Offshore Winds

The rose diagram shows only the swells directed at Nungwi Reefs that coincided with light winds or offshore conditions through a typical November. It is based on 2849 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 represent increasing swell sizes and red represents highest swells greater than >3m (>10ft). In both graphs, the area of any colour is proportional to how commonly that size swell happens.

The diagram implies that the prevailing swell direction, shown by the biggest spokes, was ESE (which was the same as the dominant 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 38% of the time, equivalent to 11 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal November. Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Nungwi Reefs is exposed to open water swells, we estimate that clean surf can be found at Nungwi Reefs about 38% of the time and that surf is blown out by onshore wind 60% of the time. This is means that we expect 29 days with waves in a typical November, of which 11 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.