Climate change provokes various problems on coastal community's life such as reduction in the quantity and quality of the catch, sea-water flood, storms, tidal waves, and drought. Many impacts of climate change will not lead to the vulnerability of coastal communities when a community has sufficient adaptive capacity. The purpose of this study was to analyze the adaptive capacity of coastal communities to food insecurity as the impacts of climate change. Mix method approach such as survey, in-depth interviews, focus group discussions and observation was applied to collect the data. The unit analysis was community level (n = 100 poor fishery households, beneficiaries of government's poor rice program). The adaptive capacity of communities to food insecurity is relatively low due to low institutional memory, unable to conduct innovative learning and especially the lack of connectedness with others outside the community. There is no Collective action to cope with food insecurity due to poverty, community's culture and lack of local leadership