The urban heat island (UHI) effect is a climatic phenomenon in which urban areas experience localized increases in temperature due to factors such as urbanization, dense built environments, and extensive impervious surfaces. The impacts of UHI are particularly significant for vulnerable populations, including older adults, children, and individuals with pre-existing health conditions. Addressing these effects necessitates the integration of bioclimatic design strategies, which enhance urban resilience through improved ventilation, passive design approaches, site analysis, effective open space utilization, passive solar techniques, and the use of sustainable building materials. This chapter examines the adoption and quantification of these bioclimatic strategies, highlighting their importance in optimizing energy efficiency, human thermal comfort, and indoor environmental quality across various local climatic conditions. A deeper understanding of these strategies can assist policymakers, researchers, and building professionals in crafting sustainable, energy-efficient, and climate-responsive urban environments, ultimately alleviating the adverse effects of UHI on human health and well-being.