World Meteorological Day

World Meteorological Day

Every 23 March, the World Meteorological Organization commemorates the coming into force of the Convention establishing the World Meteorological Organization on 23 March 1950. 

World Meteorological Day takes place every year on 23 March and commemorates the coming into force on 23 March 1950 of the Convention establishing the World Meteorological Organization. It showcases the essential contribution of National Meteorological and Hydrological Services to the safety and wellbeing of society and is celebrated with activities around the world.  The themes chosen for World Meteorological Day reflect topical weather, climate or water-related issues.


Upcoming World Meteorological Day Theme

WMO Executive Council has selected the following themes for the upcoming celebrations of World Meteorological Days...

WMO 2024 Calendar Competition

The World Meteorological Organization is thrilled to announce the launch of its 2024 calendar photography competition. It is one of our most eagerly awaited annual activities. Each year becomes even more successful with an ever-increasing number of amazing photographs which illustrate the beauty, power and importance of weather, climate and water.  

The future of weather, climate and water across generations

Our weather and climate and the water cycle know no national or political boundaries. International cooperation is essential. This philosophy has driven the work of the world’s meteorological community since 1873 and will guide us as we translate science into services for society for present and future generations. 

Previous World Meteorological Days

Since 1961, the World Meteorological Organization has been celebrating World Meteorological Day with a different theme selected for each year.