The paper analyzed the impacts of extreme temperature on economic activities of selected value chain players in Luzon, Philippines. Direct impacts through decreased production and/or defensive expenditures and indirect effects on other chain players were estimated. Using the value chain approach, the economic viability of value chain activities and the associated risks were highlighted. Data were collected mainly through key informant interviews with key players in each node of the chain, local government units, agencies, and other stakeholders. Results show that direct impacts of extreme temperature are largest in the production segments of the value chain, with losses manifested either through reduced volume in tilapia produced/traded or diminished value due to smaller sized tilapia being harvested. While the share in value added of pond culture operators is the largest among players, they also bear the highest share in risk and losses in the face of climate change hazards.