The second phase of the SEACLID/CORDEX Southeast Asia project examined extreme climate events in key Southeast Asian areas through active engagement and collaboration with stakeholders/end-user groups. Key vulnerable areas in the region (e.g. megacities, coastal/low-lying urban areas, areas of frequent flooding or drought) were identified based on their exposure and vulnerability to climate extremes and through consultation with stakeholders/end-user groups. Further downscaling over these key vulnerable areas was carried out using the multi-model, multi-scenarios and informed by key findings from the project’s first phase to generate high-resolution (5 km) climate projection data. This newly generated dataset will be archived as part of the Earth System Grid Federation (ESGF), allowing free user community access. Model performances, biases and projection uncertainties were examined, and data usage guidelines incorporating this information were developed and disseminated to users at the end of the project. Five face-to-face and two online technical workshops of SEACLID/CORDEX Southeast Asia Phase 2 were conducted along with the Stakeholder Engagement workshops in Thailand, Malaysia, Philippines, Vietnam and Indonesia. Moreover, two regional training workshops on the Regional Climate Model and one local training workshop on data access were conducted in Vietnam and Thailand. This project will strongly support APN’s research agendas on climate change and variability, risk reduction and resilience at regional scale and have direct relevance to international processes such as the IPCC, UNFCCC and IPBES.