This case study is designed to provide a practical example of how to use climate information to support adaptation planning and policy-making. The paper focuses on the Bagamoyo district in coastal Tanzania. Local livelihoods are mostly based on natural resources, including small-scale agriculture, seaweed farming, traditional fishing and small-scale eco-tourism. People living on the coast report that climate variability and climate change are affecting their lives due to factors such as unreliable timing and intensity of rainfall, major flooding and sea-level rise. These impacts have increased villagers’ vulnerability to food and water scarcity, infrastructure damage, ill health and earnings losses.