Gruissan - surf spot statistics

Gruissan, France, is a surf spot with relatively modest conditions year-round, best suited for beginners or longboarders due to its generally small swell and frequent onshore winds. The best months for surfers are late autumn and winter, particularly from November to February, when ground swell contributions peak (20–24%) and mean swell size reaches around 1.0–1.1m. Wind conditions remain poor throughout the year, with good wind days rarely exceeding 18% (July), but winter months see slightly better consistency despite high bad wind percentages (88–90%). Spring and summer (May–August) are the least favorable, with minimal ground swell (4–12%), high no-swell days (48–60%), and smaller waves (0.5–0.7m). September and October offer a transitional period with improving swell but still inconsistent winds. Overall, Gruissan is not a high-performance surf destination, but winter provides the most rideable waves, albeit with challenging wind conditions. Surfers should prioritize late-season sessions when swell energy is marginally higher, though patience is required due to the spot's limitations.

January in Gruissan offers mixed but occasionally favorable conditions for surfers. The average swell height is 1.1m with a decent period of 6.7s, providing rideable waves, though smaller and less powerful compared to bigger surf destinations. The best swell direction is from the WNW-NW quadrant, which delivers the highest percentage of waves in the 1-2.5m range, ensuring better shape and size. Cross-shore or light onshore winds from the NW are common, but clean offshore conditions are rare, occurring only about 10% of the time. Wind speeds often exceed 20kph, particularly from the NW and WNW, which can create choppier surfaces, but sheltered spots may still work. Expect smaller, weaker waves from E-SE directions, usually under 1.5m. While not ideal for advanced surfers seeking power, intermediate surfers can find fun sessions on NW swells with manageable wind conditions—especially when wind speeds drop below 20kph. Keep an eye out for those 10% of days with favorable winds for the best experience.