Map
Periscopes - surf spot statistics
Periscopes seasonal overview
Best Surf Season (May - September)
The heart of the dry season brings consistent southeast trade winds that blow offshore across the west-facing reefs of Periscopes. Combined with a steady diet of powerful SSW to SW groundswells generated by relentless Southern Ocean storms, this is prime time. Expect average wave heights in the 1.5-1.8m range with long periods averaging 14-15 seconds, delivering clean, rippable walls. With offshore wind conditions exceeding 90% for most of these months, the window for perfect waves is wide open.
Fair Surf Season (April, October, November)
These transitional months see a shift in the wind patterns. April still offers excellent conditions thanks to strengthening easterly trades, while October and November experience a return of more variable winds as the monsoon transitions. Swell quality remains high with solid SSW energy, but the percentage of clean offshore wind drops to 50-80%. You'll need to pick your windows, but when it aligns, the waves can be just as good as the peak season.
Low Surf Season (December - March)
The wet season brings unfavorable westerly winds that blow onshore across Periscopes, drastically reducing the quality. While the swell direction remains favorable from SW, the average wave heights dip slightly to 1.3-1.4m and periods remain long, but the wind blows from the west and northwest over 50% of the time, creating choppy, messy conditions. Ideal offshore winds occur less than 15% of the time in January and February, making surfable waves a rare treat. Only a few windows of cleaner conditions may appear during cold fronts pushing through.
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Conditions at Periscopes in July
July: Heavy Hitter
July is the peak month for swell height, averaging 1.8m, with periods holding at 14.5 seconds. The SSW direction delivers 68% of the wave energy, and within that, 37% are in the 1.5-2m range and 15% exceed 2m. Offshore winds from ESE and SE blow 93% of the time, ensuring clean, lined-up waves. This is big-wave territory—the sets can easily push into the 2-2.5m range, offering charging opportunities for experienced surfers. The combination of long-period swell and consistent offshore wind produces some of the best, most powerful waves of the year at Periscopes.
Average Spot conditions at Periscopes in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Periscopes 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 Periscopes for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Periscopes 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 Periscopes.