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Jimmys ratings
Quality on a good day: 5.0
Consistency of Surf: 3.0
Difficulty Level: 3.0
Crowds: 4.0

Overall: 4.0

See all 18 ratings

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Surf Report Feed

Jimmys Swell Statistics, Summer: Surf with Light or Offshore Winds

This image shows only the swells directed at Jimmys that coincided with light winds or offshore conditions through a typical southern hemisphere summer and is based upon 7765 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 red represents highest swells greater than >3m (>10ft). In either graph, the area of any colour is proportional to how commonly that size swell was forecast.

The diagram implies that the prevailing swell direction, shown by the biggest spokes, was SSW, whereas the the dominant wind blows from the NW. 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 37% of the time, equivalent to 34 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal southern hemisphere summer but 19% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 19%, equivalent to (17 days). Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Jimmys is exposed to open water swells, we calculate that clean surf can be found at Jimmys about 37% of the time and that surf is messed up by onshore wind 63% of the time. This is means that we expect 91 days with waves in a typical southern hemisphere summer, of which 34 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.