Supertubes • Surf Spot Statistics

Best Surf Season (April - August)

Supertubes faces northwest, so it needs the Southern Ocean to do the heavy lifting. By April the transition begins: offshore flow reaches a yearly high of 29 percent, the average swell sits around 6.5ft (2.0m), and the average period stretches to 12.8s. Through May and June the averages climb to 7.5-8.5ft (2.3-2.6m) with periods around 12.9s, while WSW and W components become more prominent in the swell rose. July and August are the peak of winter, with average heights of 9ft (2.7-2.8m) and periods of 13.1-13.3s. Those long-period Southern Ocean groundswells are the real engine for the reef, but midwinter also brings a lot of W/NW onshore wind, so the best days are the windows with S/SSW/SW/WSW flow grooming the NW-facing break.

Fair Surf Season (March and September - November)

March is the first genuine taste of autumn, with the average period jumping to 12.5s and ideal wind at 22 percent. September and October still hang onto solid winter swell - 8.5ft (2.6m) and 7ft (2.2m) respectively - but the spring pattern becomes more variable, with high-pressure systems and cold fronts competing for control. November drops to around 6ft (1.9m) with a shorter 12.2s period, making conditions fun but less heavy. These are quality shoulder months that reward flexible surfers.

Low Surf Season (December - February)

The Southern Ocean storm track retreats toward Antarctica in summer, and Supertubes settles into its smallest and shortest-period window of the year. Average swell heights drop to around 6ft (1.8-1.9m), average periods fall below 12s, and the wind rose becomes dominated by SSE/SE trades and afternoon sea breezes. Ideal offshore conditions occur only 17-18 percent of the time. There is still fun groundswell to be found, especially on dawn patrol with a light S/SW wind, but this is the low season relative to the powerful autumn and winter months.