Playa de Valdearenas is known as a surf beach, meaning it often experiences strong waves and currents typical of the Atlantic coast. While swimming is possible, visitors should exercise caution, especially those less experienced in ocean swimming. Look for any posted warnings or flag systems indicating current conditions. Lifeguard services may be seasonal, so it's always wise to be aware of your surroundings and swim with company if possible.

For the best balance of pleasant weather and fewer crowds, consider visiting Playa de Valdearenas during the shoulder seasons, such as late spring (May-June) or early autumn (September-October). During these times, the weather is generally mild and sunny, ideal for enjoying the beach, but the peak summer rush has subsided. Summer months offer the warmest temperatures but also attract the most visitors.

Playa de Valdearenas is located within the Dunas de Liencres Natural Park, near Liencres. Access is typically by car, and there are usually designated parking areas available, though these can fill up quickly during peak season. From Santander, it's a relatively short drive. Public transport options might be limited, so checking local bus schedules in advance is recommended if you're not driving. The beach is then accessed via paths through the dunes.

As a wild, dune-backed beach within a natural park, Playa de Valdearenas itself has limited direct facilities. You might find a seasonal chiringuito (beach bar) during peak summer. For more substantial food options, restaurants and cafes can be found in the nearby town of Liencres. Lodging is also available in Liencres, ranging from hotels to guesthouses, offering convenient access to the beach while providing amenities.

Playa de Valdearenas stands out due to its location within the Dunas de Liencres Natural Park, offering a wild and unspoiled natural setting. Its extensive dune system is a protected landscape, providing a dramatic backdrop. It's particularly famous among surfers for its consistent waves and is also renowned for its stunning sunsets, making it a highly Instagrammable spot. The combination of surf, natural beauty, and a sense of remoteness is quite unique.