This guide aims to help World Bank task teams and development practitioners—as well as National Meteorological and Hydrological Services (NMHSs), which are, or may be, involved in working with national governments—to improve the delivery of national meteorological and hydrological services to their citizens and economies.

The importance of weather, climate, and water information is rising because of the need to minimize growing economic losses, serve more elaborate societal needs, and help countries adapt to climate change.