Devcon 8 takes place 3–6 November 2026 at JIO World Centre in Bandra Kurla Complex, Mumbai. It is the Ethereum Foundation’s bi-annual flagship conference — the most important gathering in the global Ethereum calendar. The event draws 15,000+ attendees from 100+ countries, including Ethereum core developers, protocol researchers, Web3 founders, DeFi teams and community contributors. Diwali falls on November 8, two days after Devcon closes — many international attendees are extending their stay to experience the festival.

The two highest-value windows are Pre-Devcon 8 (Oct 31 – Nov 2) — when Ethereum builders and Web3 VCs arrive before the main conference — and the Diwali Closing Window (Nov 7–9), where the rare overlap of Devcon and Diwali creates a culturally unique networking opportunity with no global equivalent. Secondary opportunities include Pre-ETHMumbai (Mar 10–11) for the Indian Ethereum community, NASSCOM week (Feb 22–25) for enterprise tech brands, and Comic Con week (May 8–10) for gaming and NFT gaming audiences.

ETHMumbai 2026 takes place 12–15 March 2026. The event is an Ethereum-focused conference and hackathon hosting 50+ speakers, 500 attendees and 300 hackers. ETHMumbai has grown from a grassroots hackathon into India’s leading regional Ethereum event — now serving as the flagship warm-up for the Devcon 8 Mumbai ecosystem. March also overlaps with Lakmé Fashion Week — BKC venues and hotels face elevated pressure across the same period.

The main crypto and Web3 events in Mumbai in 2026 are ETHMumbai (Mar 12–15, ~800 Ethereum builders and hackers), Money Expo India (Aug TBC, ~2K, crypto and multi-asset trading), and — most significantly — Devcon 8 (Nov 3–6, 15K+ global Ethereum community at JIO World Centre). Devcon 8 places Mumbai at the centre of the global Web3 calendar in 2026 and is expected to generate the largest concentrated inflow of crypto-native talent into India ever recorded.

Devcon 8 will create the tightest accommodation and venue market Mumbai has seen for a single event. Every hotel within 10km of BKC — including Sofitel Mumbai BKC, Grand Hyatt Santacruz, ITC Maratha, Trident BKC and JW Marriott Juhu — will reach capacity. Premium BKC venues book out 4–6 months in advance. Side event organisers should have venues locked by June 2026 at the latest. Hotel room blocks for large groups should be secured by May 2026. Diwali on November 8 means hotel pressure does not normalise until approximately November 12–13.

April and June through September offer the best hotel rates and full venue availability in Mumbai. April is the last clear window before the monsoon with excellent rates and ideal weather. Monsoon months (June–September) bring the lowest rates of the year — ideal for indoor activations at 5-star properties. The peak month to plan around is November — Devcon 8 is the most critical booking window in Mumbai’s 2026 calendar by a significant margin.

Diwali 2026 falls on November 8, two days after Devcon 8 closes on November 6. The Ethereum Foundation explicitly noted this timing in their announcement, inviting global delegates to stay and experience India’s most celebrated festival. This creates a unique extended networking window — global Ethereum builders and investors remain in Mumbai through Diwali, keeping hotel demand elevated through November 10–12. A Diwali-themed closing dinner or rooftop activation is an offer with no equivalent anywhere else in the global crypto calendar.

Yes — CH3 Agency is a global event production agency specialising in crypto, gaming and tech events, with 330+ events produced across 40+ cities. For Devcon 8 in Mumbai, we handle everything from venue sourcing across BKC, Bandra West and Lower Parel to full production, branding and guest management. Get in touch to plan your Mumbai activation.