Climate change presents profound challenges that extend far beyond environmental transformations, profoundly impacting human psychological and social landscapes. The intricate relationship between climate change and mental health (hereafter CCMH) nexus, particularly for migrant communities, represents a critical yet often overlooked dimension of global sustainability frameworks. Our research reveals that climate-induced stressors create complex psychological challenges that disproportionately affect vulnerable populations, especially migrants experiencing precarious legal and social conditions. The mental health impacts of climate change are not uniformly distributed but manifest with significant variations across different demographic groups. Migrants face unique vulnerabilities that amplify psychological distress, including limited access to support systems, economic constraints, and heightened exposure to environmental hazards. These challenges are compounded by intersectional factors [age, gender, race, and socioeconomic status], significantly influencing an individual’s capacity to adapt and resilience. Current mental health support mechanisms demonstrate critical inadequacies in addressing climate-related psychological challenges. Existing frameworks lack comprehensive coordination, fail to incorporate context-specific action plans, and are hindered by persistent socio-cultural stigmas. The absence of integrated approaches prevents effective intervention strategies that could mitigate the profound emotional and psychological burdens experienced by affected communities. Based on discourse analysis and representative case studies, our assessment advocates for a transformative, transdisciplinary approach that bridges environmental science, psychology, sociology, and public health. We advocate leveraging global initiatives like the Sustainable Development Goals and the Global Compact for Migration to develop interventions that recognize the complex intersectionality noted in CCMH. The goal is to create adaptive support systems prioritising human resilience and psychological well-being in an increasingly unpredictable global environment.