Climate Week NYC 2027 is scheduled for September 19–26 in New York City, returning as an eight-day gathering organized by Climate Group and held in coordination with the UN General Assembly.1 The event is designed to connect people and ideas shaping a low-carbon economy, bringing together decision-makers and experts working across business, government, policy, capital and markets.1
The week is a citywide program rather than a single conference. Its events include sessions organized by a broad range of participants, alongside flagship programming such as the Opening Ceremony and The Hub Live.13 In 2026, the program included more than 1,500 events and drew over 120,000 participants, with conversations taking place across New York City.23 Those figures describe the previous edition, not confirmed attendance or programming for 2027.
Climate Group says the event’s purpose is to advance climate action by convening leaders across business and government.1 The 2026 edition used the theme “Energy. Impact. Action.” and its program addressed climate and economic progress; the 2027 theme and detailed schedule have not yet been announced in the available sources.15 The audience spans public- and private-sector decision-makers and experts, while the citywide events program offers opportunities for climate leaders at different levels.16
Coverage of the 2026 edition emphasized its scale and range: the Climate High-Level Champions highlighted solutions presented by governments, companies, cities and investors, including work on transport, buildings, industry, waste, resilience and finance.7 The organizer’s site also reports that sessions from 2026 are available on demand.1