For those who have time on their hands, this is, though a great way to see the Kurile Islands. Regular flights weather depending also operate to Kunashir. Again, one has to have time in order to not be caught by surprise by the weather. Fog, strong winds, etc. might delay flights from hours to days. Weather Sakhalin also has a mild climate but can be very rainy in Spring and Fall.
Winter comes early with much snow.
Summers can be hot and as everywhere in Eastern Russia, August and September are the best months to visit. The largest island of the Sakhalin Oblast is Sakhalin. It occupies a territory of 78,000 square km and stretches from north to south for 948 km. It is separated from the mainland of the Far East by the Tartar Strait, borders the Pacific Ocean on the east and the Sea of Ohotsk to the north. In the south, Sakhalin is separated by the La Perouse Strait between Sakhalin Island and the Japanese Island of Hokaido.