Sandy Beach - surf spot statistics

Best Surf Season (November - March)

Winter truly delivers at Sandy Beach. As the North Pacific jet stream amplifies, a relentless conveyor belt of extratropical cyclones spins up deep low-pressure systems across the Gulf of Alaska. These systems generate powerful, long-period SSW to WSW swell trains that march straight into the west-southwest facing shore. Average wave heights hover between 2.4m and 3.0m, with periods frequently exceeding 11 seconds, offering plenty of pumping and firing conditions. The kicker? A strong thermal high-pressure builds over the interior, sending consistent ENE to NNE offshore flow across the lineup more than half the time. This interplay between solid groundswell and clean, groomed surf makes for some of the most consistent and high-quality surf of the year.

Fair Surf Season (April, May, October)

Transition months bring a mixed bag. Spring (April and May) sees the North Pacific storm track start to weaken; swell heights drop to the 1.7-2.2m range and periods shorten to around 10 seconds. However, the offshore wind window remains decent, particularly in April with 50% clean conditions, allowing for plenty of fun-sized and rippable waves. May is more marginal as the trade winds become dominant and onshore flow increases. October marks the beginning of the overall return — average swell height jumps back to 2.5m as early fall storms develop, but the wind is still fickle with only 39% ideal. When a cold front passes and the wind clock around to the north, October can produce epic sessions with very powerful long-period surf under sunny skies.

Low Surf Season (June - September)

Summer is the quietest stretch for Sandy Beach. The North Pacific storm machine shuts down, leaving behind a diet of weak, short-period swell from distant tropical systems or local windswell. Average heights sit at a meager 1.3-1.4m, with periods around 10 seconds. Worse, the predominant wind flow becomes onshore SSW-WSW as the Pacific High shifts north and thermal gradients weaken. Ideal offshore conditions occur only 25-34% of the time, meaning most days you’ll face bumpy, choppy surfaces. However, the occasional passing tropical wave or rare long-period south groundswell can salvage a session, offering brief windows of small, fun-sized surf. Overall, it’s a great time for beginner lessons and longboard cruising, but serious wave hunters will look elsewhere.

July: Deepest Summer Doldrums

July is the toughest month for quality surf at Sandy Beach. Average height bottoms out at 1.3m, period 10.2s. Swell direction is tightly focused on SW (32.7%), WSW (29.6%), and SSW (16.6%), but most energy is under 1.5m — micro to small. Ideal wind frequency plummets to 25%, the lowest of the year. Onshore SSW-SW-WSW winds become prevalent (combined 20.7%), while the offshore component from ENE-NE barely reaches 4.2%. Afternoon sea breezes are the norm, leaving early mornings as the only window for remotely clean conditions. The rare exception is a passing tropical swell, which can bring waist-to-chest high waves with some power, but these are infrequent.