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Johanna ratings
Quality on a good day: 3.5
Consistency of Surf: 5.0
Difficulty Level: 3.5
Crowds: 3.5
Accommodation: 4.0

Overall: 3.4

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Johanna Swell Statistics, Winter: Surf with Light or Offshore Winds

This image shows only the swells directed at Johanna that coincided with light winds or offshore conditions through a typical southern hemisphere winter and is based upon 8738 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 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 frequently that size swell happens.

The diagram suggests that the prevailing swell direction, shown by the longest spokes, was SW, whereas the the dominant wind blows from the WNW. 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 29% of the time, equivalent to 26 days. Expect open water swells to exceed >3m (>10ft) 3% of the time (3 days). Taking into account the fraction of these swells that coincided with predicted offshore winds, and given the fact that Johanna is exposed to open water swells, we calculate that clean surf can be found at Johanna about 29% of the time and that surf is messed up by onshore wind 50% of the time. This is means that we expect 72 days with waves in a typical southern hemisphere winter, of which 26 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.