uk es it fr pt nl
Jan Juc ratings
Quality on a good day: 4.0
Consistency of Surf: 5.0
Difficulty Level: 1.7
Wind and Kite Surfing: 4.0
Crowds: 2.3

Overall: 4.0

See all 18 ratings

Based on 3 votes. Vote


Surf Report Feed

Jan Juc Swell Statistics, Winter: Surf with Light or Offshore Winds

This image shows only the swells directed at Jan Juc that coincided with light winds or offshore conditions over a normal southern hemisphere winter. It is based on 8738 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. Green and yellow represent increasing swell sizes and red illustrates the largest 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 biggest spokes, was WSW, whereas the the most common 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 59% of the time, equivalent to 54 days. Open water swells exceeding >3m (>10ft) only arise 0.8% of the time in a typical southern hemisphere winter, equivalent to just one day but 7% of the time we expect swell in the range 2-3m (6.5-10ft) 7%, equivalent to (6 days). Taking into account the ratio of these swells that coincided with forecast offshore winds, and given the fact that Jan Juc is exposed to open water swells, we calculate that clean surf can be found at Jan Juc about 59% of the time and that surf is messed up by onshore wind 33% of the time. This is means that we expect 84 days with waves in a typical southern hemisphere winter, of which 54 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.