Vairao - surf spot statistics

Best Surf Season (April - September)

The heart of the surf year at Vairao is driven by the powerful Southern Ocean. From April through September, average swell heights climb to a solid 2.1-2.3m, with wave periods consistently in the 12-13s range. The dominant swell directions are S, SSE, and SE, which, while not directly hitting this west-facing beach, wrap around the island with impressive energy, delivering long, lined-up waves. The trade winds from the east and southeast blow offshore (ideal for the west coast), but the wind is at its strongest and most variable during these months—ideal wind percentages dip to 26-42%. Still, when the trades ease, you can score pumping, glassy conditions with those long-period south swells. This is the prime window for size and power.

Fair Surf Season (October - March)

As spring transitions into the austral summer, the swell engine shifts. From October to March, average heights drop to 1.7-2.0m, but the mix of swell directions becomes slightly more favorable. Though still dominated by southern quadrants, there is an uptick in SW to WNW swell energy (especially from December to February), which hits Vairao more directly. The trade winds remain mostly from the E/ESE—perfectly offshore—and the wind is more consistent and often lighter, with ideal wind percentages ranging 33-42%. The waves may be smaller, but the combination of cleaner conditions and more direct swell angles makes for fun, rippable waves that are far less demanding than the winter giants. This is the season for loggers, fish, and higher-performance surfing.

Low Surf Season (None)

Vairao enjoys year-round surf. Even the weakest months (like January or December) see average swell heights over 1.5m and periods above 11s, thanks to the ever-present Southern Hemisphere swell train. There is no true low season, but the most challenging period for consistency is arguably June through August when the trades are strongest and gusts can ruin the surface. However, with the right storm track and a window of light winds, each season offers its own reward.

March: Size Creeps Up, Winds Improve

Average swell height jumps to 1.9m, period to 12.6s. The swell is heavily southern (S 31%, SSE 25.3%), but SW and WSW still contribute about 6.4%. This is a transitional month: the trade winds are strong (E 27.2%, ESE 19.9%) but ideal wind percentage increases to 42%—meaning more clean sessions. The south swells are beginning to show more power, wrapping around with long-period lines. Wave heights in the 1.5-2.5m range become more common, offering good intermediate and advanced surfing. A great margin for both fun-speed and heavier barrels when the sets line up.