Rising temperatures may make it more difficult to access and afford nutritious food. In this study, we looked at how heat affects the types of food young children eat in four countries: Burkina Faso, Ethiopia, Kenya, and Rwanda. We explore whether children met the World Health Organization’s standard for minimum dietary diversity—eating at least five of eight different food groups in the past day. We combine health survey data with satellite-based temperature and urbanization measures to see how local heat and living environments affect children’s diets. We examine how heat exposure relates to minimum dietary diversity and consumption of specific food groups like vegetables and animal-source protein, while adjusting for household characteristics like maternal education, water access, sanitation, and child age that are often associated with nutrition. This approach helps us better understand how rising heat interacts with where families live to shape nutrition outcomes—and where future interventions may be needed most. As climate change intensifies, it’s critical to understand how heat affects children’s access to diverse and nutritious food, and where to focus support to keep kids healthy.