Guide to extreme heat planning in South Africa for the human health sector: A package of practical, feasible, and low-cost interventions at the individual and community level can assist people to adapt to high temperatures. The health sector is the lead agency on the Heat Health Action Plan, responsible for coordinating across other departments and stakeholders, including those outside of government. The Heat Health Information Plan needs to deliver useful, timely, accessible, consistent and trustworthy information to their target audience, with a focus on vulnerable populations.