Countries in the Global South are highly vulnerable to climate change's health impacts. While extensively researched, quantitative evidence has provided minimal insights into daily realities. To address this gap, in 2023 The Geneva Learning Foundation ( https://www.learning.foundation/climate ) organised an experience-sharing event dedicated to climate impacts on health for its 50,000+ international network of health and other workers in the Global South. An online survey collected data on perceptions and observed impacts. A total of 4700 health practitioners from 68 countries registered, with 1,260 submitting observations. Analysis revealed high levels of concern across multiple domains, with food security, malnutrition, vector-borne diseases, and water-borne diseases being the most frequently cited impacts. Qualitative analysis provided additional insights, including the tendency to contextualise climate change within broader environmental degradation, highlight complex interrelated impact pathways on community health, and identify vulnerabilities of specific groups such as women, pastoralists, etc. The study also uncovered examples of health workers collaborating with communities to build climate resilience. These cases emphasise the potential to leverage health workers’ close community relationships, trusted positions, and expert knowledge to support community-focused efforts in limiting climate change health impacts in the Global South. This approach could significantly contribute to adaptation strategies and resilience-building.