Projected climate change information at regional scales is important for adaptation measures. However, regional downscaling is a resource-expensive exercise. Given the overlapping domain, conducting a collaborative effort is in the best interest of countries within the Southeast Asia region (SEA). With this objective, the Southeast Asia Regional Climate Initiative (SEARCI) was established during a workshop at Hanoi University of Science (HUS) on 2-3 August 2012 and attended by scientists from Malaysia, Vietnam, Indonesia, Thailand and the Philippines. Under SEARCI a collaborative climate downscaling exercise (SEACLID) will be carried out for a common SEA domain, employing 5 Coupled Model Intercomparison Project Phase 5 (CMIP5) Global Climate Models (GCMs), 3 Representative Concentration Pathways (RCPs) and the Regional Climate Model version 4 (RegCM4).