Conditions at Gruissan in October
October: Autumn Refocus
October is where Gruissan starts to wake up. Average swell height climbs back to 3ft (0.9m), period edges up to 5.0s, and ideal wind sits at 20%. The favourable swell directions reach their annual peak frequency, with E/ESE/SE/SSE totalling over 44% of the wave rose, and the height distribution shows a healthy spread of 3-8ft (1-2.5m) waves, especially from ESE and SE. These are products of deepening Mediterranean lows and cold fronts sweeping down from the Atlantic. The dominant wind shifts away from pure WNW: though still the largest category at 30.5%, there are more SE/ESE onshore flows, so timing is everything. When the front passes, the wind swings NW offshore and the swell holds from ESE, conditions can be excellent. Water temp drops to 18.7°C while rain averages 2.37 mm/day. Autumn has arrived.
Average Spot conditions at Gruissan in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Gruissan during October. 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 October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Gruissan for October. 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.