Liinakhamari was handed over to Finland after the Treaty of Tartu in 1920. Liinakhamari was Finland's only ocean harbour. The so-called Arctic Ocean Highway from Rovaniemi to Liinakhamari was completed in 1931. The harbour housed a toll, a fish factory, and a hotel and was extended by the end of the 1930s.
During the Russo-Finnish Winter War, the Soviet Union conquered Liinakhamari, but it was returned to Finland in the Moscow Peace Treaty. During 1940–1941, the peace-time period between the Winter War and the Continuation War, Liinakhamari was Finland's and Sweden's only route past the German and Soviet areas of influence. 10,000 men worked along the Arctic Sea Road helping thousands of trucks to transport cargo from the northernmost railway station in Rovaniemi to Liinakhamari harbour. The trip was almost 1,100 kilometres (700 mi) north along the narrow gravelled road, in the middle of sparsely inhabited Arctic taiga.
Finnish civilians were evacuated when the Lapland War between Germany and Finland broke out in the autumn of 1944. The harbour was captured from the Germans by Soviet troops on 12 October 1944. Liinakhamari was handed over to the Soviet Union according to agreements of the Moscow armistice.
Liinakhamari is currently a military harbour. During the Cold War, the harbour was a submarine base, and at present it houses border patrol boats.
Climate
Climate data for Liinakhamari harbour (1991–2020 normals)