The Alley - surf spot statistics

The Alley in Australia is a surf spot with predominantly wind-driven swells, as the data shows that wind swell percentages dominate throughout the year, peaking at 90% in November. Ground swells are relatively low, never exceeding 29% (July), making this spot more favorable for surfers who prefer shorter-period waves. The best months for surfing are generally between May and July, when the swell consistency improves with 25-29% ground swells and better wind conditions, reaching up to 40% favorable winds in June. During these months, mean swell sizes range from 1.1m to 1.3m, which is manageable for intermediate to advanced surfers. However, the spot suffers from poor wind conditions for most of the year, with onshore winds (bad conditions) frequently above 60%, particularly from December to April when they often exceed 80%. The most challenging period is summer (December-February), where wind swell dominance and unfavorable winds make conditions less ideal. If you're looking for the most reliable surf, aim for late autumn and early winter (May-July), when ground swells increase slightly, and wind conditions are marginally better.

In September, The Alley offers generally manageable surf conditions with an average swell height of 1.1m and a decent period of 8.5s, indicating consistent, moderately powerful waves. The predominant swell direction is from the E to SE quadrant (E, ESE, and SE combined account for most waves in the 0.5–2.5m range), providing favorable, well-organized waves for surfing. However, larger swells (1.5m+) are less frequent, with only around 5–10% of waves exceeding 1.5m, meaning most days are suitable for intermediate surfers rather than big-wave specialists. Wind conditions are mixed, with ideal offshore winds (light W/NW) occurring just 26% of the time. The most common winds are N to E (onshore or cross-shore), which can create chop, particularly at speeds over 20kph—a frequent occurrence in northerly and southerly flows. While mornings often see lighter winds, afternoons tend to become breezier, reducing wave quality. Overall, September delivers rideable waves regularly, but optimal glassy conditions are hit-or-miss. Surfers should target early sessions and watch for windows of lighter W/NW winds or periods of E/SE swell for the best shape. Keep an eye on swell intervals—days with periods over 10s will improve wave power and consistency.