Coastline & Archipelagos of Sweden

Sweden's coastline stretches over 3,000 kilometres — and if you count every island, inlet, and skerry, the figure rises to more than 11,000. It is a coastline of extraordinary variety: polished granite skerries on the west, rising land and shallow bays in the north, a labyrinth of 30,000 islands in the Stockholm archipelago, limestone sea stacks on Gotland, and sandy beaches in the south. Much of this diversity is a direct product of the geology beneath and the ice that sculpted it.

The West Coast: Bohuslän

The coast of Bohuslän (Bohuslän) north of Gothenburg is Sweden's most Atlantic-facing shore — a landscape of bare, smoothly rounded granite islands and skerries scoured by wind and waves. The rock here, predominantly Precambrian granite, has been polished by thousands of years of marine erosion into the distinctive pink-grey surfaces that define the region's identity.

The High Coast in Ångermanland, roughly halfway up Sweden's Bothnian coast, is a UNESCO World Heritage Site — and the world's foremost example of post-glacial land uplift. Since the ice sheet retreated roughly 10,000 years ago, this section of coast has risen nearly 300 metres — the highest documented isostatic rebound anywhere on Earth.

The result is a dramatic, mountainous coastline that looks out of place on a relatively flat sea. Cliffs rise steeply from the water, and features that were once on the seafloor — wave-washed caves, beach terraces, smooth-polished rock — are now found hundreds of metres above the current waterline. The Skuleskogens nationalpark (Skuleskogen National Park) protects a section of this landscape, offering trails that pass through ancient coastal caves now deep in the forest.

The land continues to rise here at roughly 8 millimetres per year. Islands are slowly growing, bays are becoming lakes, and the coastline is measurably different from one generation to the next.

The Stockholm Archipelago (Stockholms skärgård (Stockholm Archipelago))

Further north, the Bothnian Bay coast becomes increasingly flat and marshy, with extensive strandängar (coastal meadows) that provide crucial habitats for migratory birds.

Gotland and the Limestone Coast

Gotland (Gotland), Sweden's largest island (3,140 km²), has a coastline fundamentally different from the mainland. Built of Silurian limestone roughly 420 million years old, Gotland's shores feature:

Raukar (Sea stacks) — Tall, sculpted limestone pillars standing along the coast, created by differential erosion of hard and soft rock. The most famous formations are at Fårö (the island's northern tip, beloved by filmmaker Ingmar Bergman) and Gotland's east coast
Fossil-rich cliffs — The limestone contains abundant fossils of corals, crinoids, and trilobites from when Gotland lay beneath a tropical sea
Sandy beaches — Some of Sweden's finest, particularly at Tofta and on the island of Fårö

Gotland's smaller neighbour, Öland (Öland), also has a limestone coast, with the distinctive flat Stora Alvaret (Great Alvar) reaching down to the sea on its western side.

The Southern Coast: Skåne

Sweden's southernmost coastline shifts character again. In Skåne, the bedrock changes from crystalline shield to sedimentary rock, producing:

Sandy beaches — The entire south coast from Ystad to Trelleborg, plus the northern Öresund shore, features wide sand beaches — unusual by Swedish standards
Chalk cliffs — At Simrishamn and along the southeast coast, Cretaceous chalk cliffs evoke the English Channel coast
Öresund — The narrow strait separating Sweden from Denmark, crossed since 2000 by the Öresund Bridge linking Malmö to Copenhagen

The south coast has a more continental European feel — warmer waters, sandy shores, and a flatter profile — quite different from the granite and archipelago landscape further north.

Coastal Ecology and Conservation

Sweden's coastline supports rich and varied ecosystems:

Seabird colonies — Outer skerries host breeding colonies of eider, guillemot, razorbill, and terns
Seal populations — Grey seals and harbour seals haul out on rocks along both coasts
Baltic Sea ecology — The brackish Baltic supports a unique mix of freshwater and marine species, though eutrophication and warming pose serious threats
Coastal wetlands — Strandängar (coastal meadows) along the Bothnian and southern coasts are vital stopover sites for migratory birds

Sweden has expanded its marine protected areas significantly in recent decades. Kosterhavet National Park (2009), off the west coast, was the country's first marine national park, protecting the most species-rich marine environment in Swedish waters.

Gothenburg city guide — Explore the archipelago from Sweden's west coast capital

The Viking Age — How Sweden's coastline shaped its seafaring history

Summer coast itinerary — Island-hopping along Sweden's most beautiful shores