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.

March at Gas Bay delivers consistent surf with an average swell height of 2.4m and a solid period of 13.2s, indicating powerful, well-spaced waves. The swell is predominantly from the SW (46.5% of waves in the 1.5–2.5m range), producing clean, rideable lines with good energy. Smaller contributions from SSW and S swells add variety but are less dominant. Wind conditions are less favorable, with only 18% of winds being ideal (likely offshore or light cross-shore). Easterlies and southeasterlies prevail (20–30% of winds in the 10–30kph range), which can create choppy or onshore conditions, especially in the afternoons. However, early mornings or days with lighter SE/SSE winds may offer cleaner sessions. Bigger days (2m+) are frequent (24.1% of SW swells over 2.5m), suited for experienced surfers, while mid-sized days (1.5–2m) provide more manageable waves. Expect a mix of punchy beachbreak peaks and occasional lined-up walls, depending on sandbanks. Overall, March is reliable for swell but requires timing to dodge unfavorable winds.