As global temperatures continue to rise, understanding the relationship between climate and vegetation is crucial for agriculture and for mitigating and adapting to environmental changes. The complex interaction between vegetation and climate becomes even more significant as temperatures increase, making it essential to comprehend these changes in the environment. This study examines how vegetation dynamics in the Sylhet Region have been affected by long-term temperature changes over the past four decades. This study aims to uncover changes in temperature trends and vegetation growth over recent decades and how it has impacted the climate of the Sylhet region. This research utilizes the Normalized Difference Vegetation Index (NDVI) data from satellites, and statistical analysis techniques are used to examine the relationship between vegetation and temperature in Sylhet. This research shows how changes in temperature affect vegetation health and density. Satellite imagery shows a steady decrease in vegetation density in the Sylhet region. Local climatic variables such as temperature, precipitation, and humidity, as well as anthropogenic factors like urbanization and deforestation, are identified as primary factors behind the loss of vegetation. This study shows a decreasing effect of climate-driven changes on vegetation over time by closely examining the relationship between NDVI and regional climatic parameters. This implies that in recent years, the direct impact of climatic variability has been less significant than the involvement of human-induced variables, such as urbanization, land-use changes, and deforestation, in shaping vegetation patterns.