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Conditions at Kommetjie in July
July: The Heart of Winter's Power
July is statistically the largest swell month on the calendar. Average height reaches 9.5ft (2.9m) and the average period peaks at 12.6 seconds, with SW (18%), WSW (10%), SSW (9%) and W (3%) powering the water. When those long-period pulses arrive with a clean offshore ESE/SE wind, Kommetjie is as heavy and pumping as it gets. But July also carries the highest onshore wind risk: NNW (18%) and NW (11%) winds, often 20-40kph, wreak havoc on wave quality. Ideal conditions sit at 17%, meaning roughly one day in six offers the full combination. With air temperatures averaging 14.3°C, water at 15.1°C, and precipitation at 2.43 mm/day, winter gear is essential. The forecast phrase 'front passing, wind swinging SE' is the key to scoring July.
Average Spot conditions at Kommetjie in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Kommetjie 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 Kommetjie for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kommetjie 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 Kommetjie.