Delta regions, characterized by dense populations and fertile lands, are increasingly vulnerable to microclimate variability driven by climate change, land-use alterations, and hydrological disruptions. This chapter examines how microclimatic drivers—such as fluctuations in temperature, humidity, rainfall, and wind—shape the resilience of delta ecosystems and communities, and evaluates their implications for agriculture, fisheries, water resources, and human settlements. By aligning its objectives with the assessment of these microclimatic shifts, the chapter investigates the intersection of socio-economic vulnerabilities—poverty, population density, and limited infrastructure—with biophysical risks that intensify exposure in low-elevation delta zones. To address these challenges, the chapter presents adaptive strategies informed by global and region-specific case studies, particularly in Asian and African deltas. These include nature-based solutions such as mangrove restoration and agroforestry, climate-smart agriculture, efficient water management, and localized climate monitoring systems. Emphasis is placed on participatory governance, the integration of traditional knowledge with scientific tools, and supportive policy frameworks that enable scalable and context-specific adaptation. Adopting an interdisciplinary perspective, the chapter advances pathways that directly link microclimate-sensitive adaptation with sustainable development priorities. The discussion offers insights for policymakers, researchers, and practitioners seeking to manage climate-induced risks and enhance resilience in vulnerable deltaic regions worldwide.