海岸侵食
Coastal erosion and the shifting of the mouth of the River Blyth meant that the neighbouring town of Dunwich, to the south, was lost as a port in the last years of the 13th century. Following a brief period of rivalry and dispute with Dunwich, Walberswick became a major trading port from the 13th century until World War I. Almost half of the properties in the village are holiday homes.