This paper aims to capture and analyze emerging experiences, lessons and tensions evident from several years of work underway through the Asian Cities Climate Change Resilience Network, a network of secondary cities in South and Southeast Asia that have engaged in a process to analyze vulnerabilities and plan and implement measures to address them. With the support of the Rockefeller Foundation and numerous partners, these cities have identified more than 59 specific resilience-building measures, of which 23 are being implemented. Through this work we see 10 critical urban climate change resilience action areas that cities must consider in order to strengthen their ability to anticipate, prepare for and respond to the types of sudden and slow onset impacts. These are: climate sensitive land use and urban planning; institutional coordination mechanisms and capacity support; drainage, flood and solid waste management; water demand and conservation systems; emergency management and early warning systems; responsive health systems; resilient housing and transport systems; strengthening of ecosystem services; diversification and protection of climate-affected livelihoods; and education and capacity building of citizens. We present case studies of how these measures are implemented in specific cities and highlight the tensions and challenges that have emerged. Primary tensions arise around the powerful political economy forces that influence decisions in cities; ensuring that the risks and benefits of resilience-building measures are distributed equitably; aligning incentives of various stakeholders in cities; and developing the mandates, coordination and capacities needed to manage a multi-scale and multi-sector issue as complex as urban climate change resilience. This empirical base of practice provides important learning to help guide further the refinement of both theory and practice in the nascent field of urban climate change resilience.