International Mountain Day 2025
Date and Time: Thursday, December 11, 2025 · All day
Location: Global observance Virtual and in-person events worldwide Not applicable
Format and Highlights:
- Duration: All day
- Format: Hybrid (global observance with local and virtual events)
About This Event: International Mountain Day highlights the importance of mountain ecosystems as critical watersheds that feed ocean systems and support coastal communities worldwide. Mountains are the water towers of the world, supplying freshwater to over half of humanity and serving as vital sources for rivers that flow to coastal zones and marine environments.
This UN-designated observance brings attention to the interconnected nature of mountain, freshwater, and marine ecosystems, emphasizing how sustainable mountain management directly impacts ocean health through sediment flow, nutrient cycling, and freshwater provision. Climate change poses severe threats to mountain glaciers and snowpack, with direct consequences for downstream marine ecosystems and coastal communities dependent on these water sources.
What to Expect:
- Global awareness campaigns highlighting mountain-ocean connections
- Educational events and webinars on mountain ecosystem conservation
- Policy discussions on integrated watershed management
- Community celebrations in mountain regions worldwide
- Social media campaigns emphasizing mountain biodiversity and water security
Contact or Registration: Visit FAO’s International Mountain Day webpage for global event listings and participation opportunities.