London Climate Action Week
London Climate Action Week harnesses the power of London for global and local climate action.
An open and inclusive platform for action — and a public good — LCAW is one of the world’s largest independent climate events. Now in its eighth edition, it brings together more than 75,000 people across more than 750 events over nine days each June — from community gatherings in every borough to ministerial roundtables in the City of London, from school events to major international conferences. Climate action happening, visibly, across an entire global city.
LCAW is a key moment in the global climate calendar — where climate action happens between COPs, where the UN Global Climate Action Agenda comes alive in cities and communities, and where the international climate community gathers to build the cooperation for progress and action.
Hosted by E3G — Third Generation Environmentalism
lcaw 2026
The 2026 edition takes place 20–28 June across London — nine days, the whole city.
Hosting your own climate event this June? Register it as part of LCAW 2026 — open to all, free to register.
the global network
LCAW is part of a growing international network of climate action weeks — connecting London to climate communities in New York, Shanghai, Bangkok, Sydney, Rio de Janeiro and beyond. Each week is locally rooted and globally connected, sharing the ethos of open and inclusive climate action.
Together, these weeks are a platform for the UN Global Climate Action Agenda — where real-world implementation happens between COPs with people in cities and communities around the world.
