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Okiwi - Whangapoua Estuary ratings
Quality on a good day: 3.0
Consistency of Surf: 3.0
Difficulty Level: 2.0
Crowds: 3.0
Accommodation: 2.0

Overall: 3.0

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Okiwi - Whangapoua Estuary Swell Statistics, May: Surf with Light or Offshore Winds

This image shows only the swells directed at Okiwi - Whangapoua Estuary that coincided with light winds or offshore conditions through a typical May. It is based on 2696 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 illustrate increasing swell sizes and red shows the biggest swells, greater than >3m (>10ft). In both graphs, 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 biggest spokes, was ENE, whereas the the prevailing wind blows from the WSW. 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 12% of the time, equivalent to 4 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal May but 9% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 9%, equivalent to (3 days). Taking into account the ratio of these swells that coincided with predicted offshore winds, and given the fact that Okiwi - Whangapoua Estuary is slightly protected from open water swells, we estimate that clean surf can be found at Okiwi - Whangapoua Estuary about 12% of the time and that surf is blown out by onshore wind 20% of the time. This is means that we expect 10 days with waves in a typical May, of which 4 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.