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Conditions at Pennington Bay in April
April: The Autumn Gold Rush
April is where Pennington Bay's season turns. The average period jumps to 12.1s, the mean swell height holds at a solid 1.7m (5.6ft), and the ideal wind percentage doubles to 23%. The SE/SSE onshore machine starts to lose its grip, with offshore N, NW, WNW and NNW flow becoming much more common in the post-frontal air streams. The swell data still show SSW at 37% and SW at 33%, but the direct-south component checks in at 11% and periods are long enough to push through the bay with real power.
Air temperatures drop to an average of 16.9°C, water sits at 18.0°C, and rainfall increases to 1.13mm/day - classic autumn conditions. The bay becomes less crowded and more consistent, with cleaner morning windows and stronger Southern Ocean lines. If you want the best balance of groomed conditions and solid wave height, April punches well above its weight.
Average Spot conditions at Pennington Bay in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Pennington 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 Pennington Bay for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Pennington 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 Pennington Bay.