Vulnerability assessment is a useful planning tool in increasing an agriculture sector's adaptation to climate change. The tool can improve the decision making process of planners in generating policies or programs that may increase the resilience of agricultural systems during the occurrence of hazardous events. This study aims to assess the vulnerability of the agriculture sector in Mabalacat City relative to typhoon Santi by using Index Method and Geographic Information Systems. A vulnerability index map was generated based on the corresponding ratings of the indicator values. Barriers to adaptation and planning recommendations were identified as well.