Climate change is an issue of great concern to all countries irrespective of their size or level of development. Thus, it is the focus of this study to examine the knowledge, perception, and attitude of Mung bean farmers in San Mateo, Isabela. A total of 100 respondents were assessed on their perspective on climate change. Frequency count, percentage and mean were used to describe the respondents and their responses. The Mann-Whitney U test is used to determine whether there is a significant difference between the perception of male and female farmers on climate change and attitude while the Kruskal-Wallis test is used to determine whether there is a significant difference in the perception of farmers on climate change when grouped according to age and educational attainment. Spearman rank-order correlation coefficient for determining the measure of association between perception and attitude of the respondents. The level of significance used for the statistical tests was set at 5%. The results revealed that Mung bean farmers’ perception and attitude on climate change is high regardless of age, sex and educational attainment. Likewise, there is a positive correlation between perception and attitude. Therefore, Mung bean farmers’ positive knowledge, perception, and attitude on climate change will serve as the reference on Climate Change Action plan for the Municipality to develop a framework for climate change literacy.