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Conditions at Gas Bay in April
April: The Window Opens
April is a turning point. The average swell height moves up to 2.0m (6.5ft), and the period lengthens to 12.8s, giving Gas Bay a more powerful Southern Ocean pulse. The directional window is excellent too: SW accounts for 41.9% of total swell energy, WSW 12.1% and SSW 14.3%, meaning the majority of waves arrive from the ideal side of the compass. The proportion of 1.5-2.5m (5-8ft) swell is high, with more 2.5m+ (8ft+) outliers beginning to show. The wind signal improves dramatically. Ideal offshore flow from the northeast quadrant reaches 28% of the time, the biggest jump of the season. Winds are more variable, with no single direction dominating; SSE (12.3%) and SE (11.7%) still appear, but there are more NE, E and NW windows. This combination of building SW/WSW groundswell and cleaner winds makes April a standout month at Gas Bay. Water temps are still comfortable at 21.0°C, air temps average 18.7°C, and rainfall rises to 1.38mm/day. It's the month when the fair-season crowds start to get excited for what winter will bring.
Average Spot conditions at Gas Bay in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Gas Bay during April. 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 April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Gas Bay for April. 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.