I really enjoyed this beach, the waves are great for surfing. The currents can be strong but not too dangerous. There are cold showers available for surfers, but anyone can use them. The walk along the beach is beautiful and continues on to the next beach, which I also loved. I highly recommend this beach, it's better than the central beaches in Biarritz.
The beach near the motorhome aire just south of Biarritz is fantastic, especially for surfing.