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Conditions at Gas Bay in July
July: Winter's Peak Size
July is the biggest month of the year at Gas Bay. The average swell height reaches 2.8m (9.2ft), and the period holds at a powerful 13.1s. Swell direction is dominated by SW (18.8%) and WSW (15.7%), with W adding 4.3% and SSW 2.8%, and there are more waves over 2.5m (8ft+) than at any other time of year. This is serious Southern Ocean groundswell. However, it comes at a price. The wind divisions show a strong winter westerly pattern: W (11.0%), WSW (10.6%), WNW (10.2%), NW (9.3%) and SW (9.0%) combine to make onshore or sideshore conditions common. Ideal NE offshore flow is only present 21% of the time. When a high pressure ridge slips in behind a front, Gas Bay can hold heavy, firing, thick waves; when the westerly gale is blowing, it is stormy and challenging. Water temps bottom out toward 18.0°C, air temps average 14.6°C, and rainfall is 3.92mm/day. This is a month for experienced surfers who know the break and can handle serious juice.
Average Spot conditions at Gas Bay in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Gas Bay during July. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Gas Bay for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Gas Bay for July. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Gas Bay.