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 in June offers powerful surf conditions with an average swell height of 3.5m and a strong period of 13.8s, indicating clean, well-formed waves. The dominant swell directions are SW and WSW, with a high percentage of waves in the 2–2.5m range and significant contributions from swells over 2.5m. This setup suggests consistent, high-energy groundswells, ideal for experienced surfers. However, wind conditions are challenging—only 16% of the time is the wind favorable for surfing, with most winds coming from the N through W quadrant at moderate to strong speeds (10–50kph), which can create onshore chop and reduce wave quality. Cross-shore or offshore winds (SW to NW) occasionally improve conditions, but overall, expect a mix of clean and messy surf depending on wind alignment. If the wind cooperates, the strong SW swell can produce excellent rides, but patience and timing are key.