The study explores the perceptions of climate change and the barriers to adaptation among communities along the Teesta River in Bangladesh. Using a mixed-methods approach, quantitative surveys and qualitative interviews were conducted with local residents, policymakers, and stakeholders to assess their understanding of climate impacts and the challenges they face in implementing adaptation strategies. The study included 385 respondents from Teesta Riverine households in the Lalmonirhat district. Regression analysis, perception analysis, and descriptive statistics were used to estimate the findings. The study revealed a concerning trend of increasing temperatures, shifting precipitation patterns, and an increase in extreme weather events that have a detrimental impact on Teesta Riverine households. The findings indicate significant awareness of climate change effects, including higher temperatures, riverbank erosion, flooding, rainfall changes, winter shifts, and cyclones. However, several obstacles were identified, such as limited and inadequate access to information, a lack of knowledge, insufficient crop varieties, lack of suitable land for cultivation, absence of personal land, and lack of storage, transportation, and marketing facilities. Additionally, the study highlights the importance of integrating local knowledge and fostering collaborative efforts to enhance adaptive capacity and promote resilience in vulnerable riverine communities. This research contributes to the understanding of climate change adaptation and provides valuable data for stakeholders and policymakers to create sustainable development plans.