Lacanau seasonal overview
Best Surf Season (October - March)
The North Atlantic storm track drives the surf calendar at Lacanau. From October through March, the west-facing beaches of the Medoc receive a near-constant supply of long-period WNW, W and NW groundswell, with average heights running from 6-8ft (1.8-2.4m) and periods of 10.6 to 12.1 seconds. These months also deliver the highest percentage of clean offshore wind windows, with 39 to 44 percent of observations ideal for surfing. Cold fronts and deep low pressure systems churn across the Bay of Biscay, and on the best days they leave behind offshore ENE to SE flow and groomed, powerful sandbars.
Fair Surf Season (April - May & September)
April and May are transitional and more inconsistent. The average swell drops to 5ft (1.5m) or below and periods shorten, but there are still plenty of fun, rippable days, especially in the morning when offshore wind survives before the sea breeze kicks in. September is the better side of the fair season; the ocean is still warm, the first autumn lows regenerate swell, and ideal wind frequencies jump back to 40 percent, making it a hidden gem before winter ramps up fully.
Low Surf Season (June - August)
The Azores High takes command in summer and suppresses the North Atlantic storm track. June, July and August average a modest 4ft (1.2m) with periods of 8.8 to 9.2 seconds, and the shoreline is dominated by shorter-period WNW and NW windswell rather than powerful groundswell. Thermal onshore winds kick up most afternoons, reducing ideal wind percentages to 26-31 percent. That said, summer mornings can still produce clean, fun beachbreak peaks, often with the added bonus of 20-22°C water and just a spring suit. If you are chasing size, however, head elsewhere.