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.

Gas Bay typically receives solid surf in April, with an average swell height of 2.7m and a long-period swell (13.5s), indicating powerful, well-spaced waves. The swell is predominantly SW (36.5% of waves over 1.5m), providing consistent, high-quality lines with good energy. SSW and WSW swells also contribute, though less frequently. Wind conditions are a mixed bag—only 23% of the time are they ideal (typically light offshore W-NW breezes), while SE-SSW winds (often 10-30kph) create chop or sideshore effects. Stronger onshore winds (20-40kph) from the E-SE quadrant can spoil sessions, but morning hours may offer cleaner conditions before sea breezes pick up. Expect sizable, powerful surf with occasional clean days, best suited for experienced surfers who can handle bigger drops and stronger currents. Wind luck will dictate session quality, so early mornings are key.