Conditions at Gruissan in August
August: Warm Water, Flat Lines
August mirrors July: 2ft (0.6m) average swell height, the shortest average period of the year at 4.0s, and ideal surf wind at 13%. The wave rose remains dominated by low-energy WNW/NW windsea plus a high frequency of SSE/SE swells, but the totals are overwhelmingly concentrated in the 0-0.5m and 0.5-1m bins. This is statistically the flattest month of the year, and the warmest water at 22.9°C helps soothe the sting. Average air temp is 23.6°C and summer dryness holds with just 0.92 mm/day of rain. When the NW tramontane blows, the surface can be clean but lake-like; when the SE sea breeze fills in, it becomes bumpy. Micro-slides for the dedicated only.
Average Spot conditions at Gruissan in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Gruissan 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 Gruissan for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Gruissan 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 Gruissan.