El Astillero is located in northern Spain within the autonomous community of Cantabria, nestled along the shores of the Bay of Santander. The town enjoys a strategic location just 10 kilometers from Santander, the capital of the region, making it a well-connected destination for both local and international visitors. The nearby Peña Cabarga mountain range and the Cantabrian coast provide breathtaking scenery, making it a hub for both coastal and inland excursions. El Astillero is also close to key geographical landmarks such as the Parque Natural de las Marismas de Santoña, Victoria y Joyel, a vital nature reserve.
The town experiences an oceanic climate, characterized by mild, wet winters and pleasantly warm summers. Temperatures rarely drop below 5°C in winter or exceed 25°C in summer, making it a year-round destination for outdoor activities and sightseeing. The best time to visit is between May and September, when the weather is ideal for enjoying the town’s natural beauty, outdoor festivals, and nearby beaches. Rainfall is common throughout the year, but it adds to the lush greenery and scenic charm of the area.