This paper aims to analyze the economic costs associated with climate change damage to Korean coastal fisheries by employing econometric methods. Using a panel fixed-effects model, the relationship between catch and climate factors (water temperature and salinity) was found to be a quadratic function of sea surface temperature, although surface salinity was not statistically significant. Applying the IPCC's SSP scenarios to project changes in catch and damage costs, the results show that if climate change mitigation efforts are successful (SSP1-2.6), the catch will increase slightly, but if warming is moderate (SSP2-4.5), long-term negative impacts will occur, and if warming continues on its current trajectory (SSP5-8.5), significant long-term damage is expected. In particular, coastal fisheries are more vulnerable than offshore fisheries due to their smaller scale and limited fishing grounds, so it is necessary to prepare policies to increase their adaptability to climate change.