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Umatac ratings
Quality on a good day: 2.0
Consistency of Surf: 2.0
Difficulty Level: 3.0
Crowds: 4.0

Overall: 2.8

See all 18 ratings

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Surf Report Feed

Umatac Swell Statistics, All Year: Surf with Light or Offshore Winds

This image shows only the swells directed at Umatac that coincided with light winds or offshore conditions through a typical year and is based upon 33252 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 represent 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 commonly that size swell was forecast.

The diagram implies that the dominant swell direction, shown by the largest spokes, was NW, whereas the the prevailing wind blows from the E. 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 18% of the time, equivalent to 66 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal year but 3% of the time we expect swell in the range 2-3m (6.5-10ft) 3%, equivalent to (11 days). Taking into account the proportion of these swells that coincided with expected offshore winds, and given the fact that Umatac is exposed to open water swells, we calculate that clean surf can be found at Umatac about 18% of the time and that surf is spoilt by onshore wind 7% of the time. This is means that we expect 91 days with waves in a typical year, of which 66 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.