Seal Point seasonal overview
Best Surf Season (May - July)
The heart of winter sees the Southern Ocean roar to life, sending consistent, long-period groundswells marching toward the Cape. Average wave heights peak at a solid 3.1m with periods averaging 12.4–12.5s, offering a steady diet of powerful, well-structured lines. Offshore wind potential also hits its annual high at 36–37 percent, driven by frequent cold fronts that deliver clean W to NW winds in their wake. This is when Seal Point truly fires, with overlapping SW and SSW swells wrapping perfectly into the bay.
Fair Surf Season (April, August - September)
Shoulder months bring a slight drop in consistency but still offer excellent potential. April averages 2.7m at 11.8s, while August and September hold onto 3.0–3.1m with periods around 12s. Ideal wind percentages cool to 28–31 percent, meaning more onshore days from the E and ENE. However, when a strong high-pressure system sits just south and a cold front passes, the windows of W/NW wind align with the remaining SW groundswell, producing firing sessions.
Low Surf Season (October - March)
Spring and summer bring a noticeable lull in size and consistency. Average wave heights dip to 2.4–2.6m and periods drop to 10.9–11.1s. The wind pattern becomes dominated by persistent E and ENE breezes, blowing directly onshore and ruining wave quality. Ideal offshore wind frequency falls to 21–25 percent. While occasional long-period pulses from distant storms in the Southern Ocean can still deliver pumping days, they are often accompanied by poor wind. Patience and careful timing are essential during these months.
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Conditions at Seal Point in August
August: Late Winter Consistency with Slight Dip
August sees a slight softening from the mid-winter peak. Average swell height holds at 3.1m but the period drops to 12.2s. The swell direction distribution is similar, with SW (12.8%) and SSW (8.0%) still dominant, but there is a noticeable increase in S (4.2%) and SSE (1.9%) swell. Winds become a bit more mixed: onshore easterlies start to pick up again (ENE 10.1%, E 6.0%), while westerlies remain robust (W 23.0%, WSW 16.8%). Ideal offshore wind frequency dips to 31%. The quality is still very high, but the windows of perfect conditions become less frequent as spring approaches. Still, August rewards those who pick their days.
Average Spot conditions at Seal Point in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Seal Point during August. 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 Seal Point for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Seal Point for August. 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 Seal Point.
