ABSTRACT Adaptation of remote island communities in the Russian European Arctic to dramatic socioeconomic changes has been intensified by the impacts of climate changes in navigation seasons. Both the stability and duration of winter and summer navigation seasons and the start of the rasputitsa season, a shoulder period between the first two, are becoming more unpredictable and jeopardizing local mobility options. The ability to commute between neighboring settlements is an important aspect of island communities’ viability. Local mobility depends on well-functioning ice roads during wintertime, tugboats during the raputitsa season and on passenger vessels or smaller boats during summer navigation. To examine whether and how the island population of the Arkhangelsk region adapts to changing conditions and what factors shape adaptation options, we apply a community-based adaptation approach. The results from qualitative interviews with 32 residents and relevant stakeholders indicate that further development of the island communities will rely on sufficient mobility options. Incorporation of climate prognoses and local knowledge can improve the planning of mobility measures. Current and future community adaptation is challenged by out-migration, unpredictability in the rasputitsa season and lack of investment in island development.