This report is a summary review on recommended practice, law and policy on hydro meteorological activities in the global context. The World Meteorological Organization, which is the international leader of the development of law and policy on hydrology and meteorology. They provide recommendations and suggest good practices through a manual and a guide for different sectors on water and weather concerns. This report focuses on law and policy on hydro meteorological activities in Vietnam and discusses the general law and policy developed through the World Meteorological Organization (WMO) according to five thematic areas of hydrometeorology cited below.

• Issues related to the systematic management of hydro-meteorological activities, with a focus on the basis of international best practices and upcoming trends in the context of climate change. A unified and systematic state management issues of the hydro-meteorological activities;
• Recommended options and solutions for management of hydro-meteorological forecasts, the roles and responsibilities of the state hydro-meteorological agencies in warning and forecasting natural disaster, and socialization of common weather forecast services provided by different organizations and individuals;
• Regulations on hydro-meteorological technical safety sites to ensure conformity with the social-economic development and sharing of international experiences in hydro-meteorological state management to ensure the technical conditions for the meteorological operations;
• Recommend management of hydro-meteorological data and information sharing in accordance with international common practices and trends;
• Review and analyze organizational systems of forecast and regulation of hydro meteorological data management in national hydro-meteorological agencies and their state management agencies from the central to local levels.