Climate change significantly alters ecosystems, impacting microbial communities critical for maintaining ecological balance. A major challenge relies with the fact that most of the microbial diversity related studies can’t be taken up by culturing them in the artificial medium. In the last two decades, metagenomics has emerged as a transformative tool for studying these microbial community dynamics, providing insights into the changes in the community structure, function, and adaptation under shifting environmental conditions. This approach involves high-throughput sequencing of microbial DNA directly from the environmental samples, enabling comprehensive profiling of diverse microbial taxa, including those previously unculturable. It is important to decipher the microbial community shifts due to the effect of climate change such as rising temperatures, altered rainfall patterns, and increased frequency of extreme weather events. These changes influence microbial diversity, abundance, and functional capabilities, potentially disrupting key processes like nutrient cycling, carbon sequestration, and soil fertility. Metagenomics enables researchers to detect and quantify changes in microbial genes associated with stress tolerance, metabolic adaptation, and symbiotic interactions, thus unraveling mechanisms underlying microbial resilience or vulnerability. Additionally, it facilitates the identification of microbial indicators for ecosystem health and early-warning systems for environmental degradation. By integrating metagenomic data with ecological and climatic parameters, scientists can model future microbial dynamics and predict their cascading effects on ecosystems. Such knowledge is essential for developing climate-resilient agricultural practices, conserving biodiversity, and mitigating climate change impacts. In conclusion, metagenomics offers unparallel potential for understanding and managing the complex interplay between microbial communities and climate change.