The International Workshop on Monsoons (IWM) series is a part of the WMO major quadrennial symposia and workshops series under the World Weather Research Programme (WWRP). High priority is given to this IWM Series in response to the CAS guidance that WWRP should focus on research for the reduction of disaster risks through improved forecasts of high-impact weather. IWM-V is organized by the Monsoon Panel of the WWRP Working Group on Tropical Meteorology Research. It will provide a forum for researchers and forecasters to discuss recent advances and current issues covering all time scales (meso-, synoptic, extended range, intraseasonal, climate) that are relevant to the forecasts of high-impact weather in the monsoon regions around the world. The IWM-V is also an effective means to transfer new science and technology to National Meteorological and Hydrological Services in these monsoon regions. The workshop will include both invited reviews and contributed papers, in the same format as IWM-IV in 2008. The invited reviews will form the basis of manuscripts to be published as chapters in a WMO-sponsored book to update the previous review volume: The Global Monsoon System: Research and Forecast, 2nd Edition, which was based on IWM-IV In addition to the main host, the Government of Macao China, IWM-V and associated and coordinated activities will be organized in cooperation with Hong Kong Observatory, Hong Kong Meteorological Society, CLIVAR AsianAustralian Monsoon Panel, Madden-Julian Oscillation Task Force, Asian Monsoon Year Science Steering Committee, and several other organizations. Some of the activities will take place in Hong Kong starting 1 November 2013. IWM-V participants are also invited to attend the Hong Kong Meteorological Society 25th Anniversary Conference scheduled for 2-4 November 2013.