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Jobo's ratings
Quality on a good day: 2.5
Consistency of Surf: 3.0
Difficulty Level: 4.0
Crowds: 2.5

Overall: 3.4

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Jobo's Swell Statistics, Spring: Surf with Light or Offshore Winds

The rose diagram shows only the swells directed at Jobo's that coincided with light winds or offshore conditions through a typical northern hemisphere spring and is based upon 8052 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 happens.

The diagram implies that the prevailing swell direction, shown by the longest spokes, was NNE, 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 25% of the time, equivalent to 23 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal northern hemisphere spring but 8% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 8%, equivalent to (7 days). Taking into account the ratio of these swells that coincided with expected offshore winds, and given the fact that Jobo's is exposed to open water swells, we think that that clean surf can be found at Jobo's about 25% of the time and that surf is spoilt by onshore wind 47% of the time. This is means that we expect 66 days with waves in a typical northern hemisphere spring, of which 23 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.