The Secretariat is headed by the Secretary-General, who is appointed by the World Meteorological Congress for a four-year term with a maximum tenure of 8 years. The Secretary-General has the responsibility to appoint all Secretariat staff, including the Deputy Secretary-General and the Assistant Secretary-General, in accordance with regulations established by Congress, and with the approval of the Executive Council.
The WMO Secretariat (headquartered in Geneva) is currently in a period of transition to a new structure that reflects the Governance Reform and WMO Strategic Plan 2020-2023, both approved by the Eighteenth World Meteorological Congress in June 2019. During this period of transition, this page and many others in the website will be regularly updated to reflect adjustments to the Secretariat.