Ensuring food security for farm households in the face of climate change is considered to be a major challenge for most developing countries, including Indonesia. The study aims to assess the impact of climate change on household food insecurity and the adequacy of current adaptation in addressing the large range of climate change impact under 17 General Circulation Models (GCMs). The result confirmed that farm households in the study area have already lived with changing climate and are likely to face higher degree of climate change in the future. The simulated rainfall has been decreasing, while the minimum and maximum temperature showed an increasing trend, to the extent highly variable across the 17 GCMs. Climate condition affected the Household Rice Sufficiency Level (HRSL), as it decreased from 61.35-64.80% under baseline to 59.75-62.09% and 59.43-61.63% under near-future and far-future, respectively, relatively lower than the observed HRSL (62.89%). Adaptations provided better HRSL, where the adapted households have 5.65%, 8.45%, and 9.29% higher HRSL than the non-adapted, under on-farm, off-farm and the combination of on- and off-farm adaptation, respectively. The current adaptations have also been proved to be relatively effective to lessen the climate change impact on HRSL under near- and far-future climate. The current adaptations, however, have not been adequate yet to ensure rice sufficiency at household level, suggesting the necessity to enhance household rice availability through various types of adaptations.