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Arrifana ratings
Quality on a good day: 3.8
Consistency of Surf: 3.7
Difficulty Level: 3.3
Wind and Kite Surfing: 1.2
Crowds: 2.7

Overall: 3.2

See all 18 ratings

Based on 6 votes. Vote


Surf Report Feed

Arrifana Swell Statistics, January: Surf with Light or Offshore Winds

This image shows only the swells directed at Arrifana that coincided with light winds or offshore conditions through a typical January. It is based on 2372 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 highest 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 occurs.

The diagram implies that the prevailing swell direction, shown by the largest spokes, was WNW, whereas the the dominant wind blows from the NNW. 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. Open water swells exceeding >3m (>10ft) only happen 3% of the time in a typical January, equivalent to just one day but 22% of the time we expect swell in the range 2-3m (6.5-10ft) 22%, equivalent to (7 days). Taking into account the proportion of these swells that coincided with forecast offshore winds, and given the fact that Arrifana is slightly protected from open water swells, we calculate that clean surf can be found at Arrifana about 43% of the time and that surf is blown out by onshore wind 45% of the time. This is means that we expect 27 days with waves in a typical January, of which 13 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.