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Conditions at Supertubes in July
July: Midwinter Heavywater
July is peak winter at Supertubes. The average swell reaches 9ft (2.8m), the highest of the year, with an average period of 13.1s. SW (18.8 percent) and WSW (15.7 percent) are the main groundswell directions, and W adds 4.3 percent. Although direct N/NW swell remains limited, the strong WSW/W component provides plenty of power for the northwest-facing reef. A significant share of waves exceed 8ft (2.5m), especially from the SW and WSW directions, so this is not a month for the faint-hearted on bigger days.
Wind quality remains the wildcard. The W/WNW/NW/NNW wind directions combine for around a third of the wind rose, and ideal offshore conditions stay at 17 percent. The saving grace is that the S/SSW/SW/WSW sector still adds up to around 30 percent of the wind distribution, and those are the windows to chase. Air temps average 16.0°C (11.5-21.3°C), water temp falls to 18.2°C, and precipitation stays high at 3.82 mm/day. Bring the step-up board and a thick wetsuit.
Average Spot conditions at Supertubes in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Supertubes 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 Supertubes for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Supertubes 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 Supertubes.