Gas Bay - surf spot statistics

Gas Bay, Australia, is a surf spot predominantly driven by ground swell year-round, with minimal wind swell interference and almost no days of flat conditions. The best months for surfing here are typically from April to September, when the swell is both consistent and powerful, with mean sizes peaking at 3.7m in July and August. However, wind conditions are less favorable during these months, with good wind days only occurring around 15-24% of the time—best in May (24%) but still generally challenging. The shoulder months of April and May offer a slightly better balance, with decent swell size (2.7m-3.1m) and marginally improved wind chances (23-24%). While winter delivers the largest and most consistent swell, the high prevalence of onshore and unfavorable winds makes it a demanding period for surfers. The rest of the year, from October to March, sees smaller swells (2.3m-3.0m), but wind conditions remain poor, rarely exceeding 18% favorable days. For surfers prioritizing swell size and consistency over wind conditions, mid-autumn to early winter (April-July) is the prime window, though patience with winds is required. If cleaner conditions are preferred, May presents the best compromise with solid swell and relatively better wind odds, though still far from ideal. Overall, Gas Bay is a powerful, swell-rich spot where surfers must often contend with wind challenges, particularly outside of the May window.

November at Gas Bay offers solid surf conditions with an average swell height of 2.5m and a consistent period of 12.9s, providing powerful, well-formed waves. The dominant swell direction is from the SW, contributing the largest proportion of rideable waves, particularly in the 1.5–2.5m range, which accounts for over 40% of conditions. The WSW and SSW directions also contribute meaningful energy, though the likelihood of clean, organized waves drops as the swell shifts south. Wind conditions are less favorable, with only 14% of days offering ideal offshore or light cross-shore winds (primarily from the N to ENE). The most common winds are onshore (SE to SSW), blowing at 10–30kph, which can create choppier waves, especially during stronger SE regimes. Surfers should prioritize sessions when swell aligns with lighter NNE-ENE winds for optimal shape, though the strong SW swell base ensures consistent surf throughout the month. Expect larger, heavier waves on peak SW days, while smaller S/SSW swells may offer more manageable rides.