Arrive fresh in Idanha-a-Nova.
Flight, train, bus or carpooling: compare the options side by side with your real dates. The idea is to arrive with a bit of battery left — you included.


The biggest psytrance festival in the world, on the shore of a lake in central Portugal — eight days of psychedelic electronic music, visionary art and community living, a biennial event that only comes back every other year.
The Boom Festival takes place every two years on the banks of the Marechal Carmona reservoir, in the Castelo Branco district of central Portugal. Created in 1997, it has become, edition after edition, the biggest psytrance festival in the world, bringing together around 50,000 people from more than 150 countries for eight days of psychedelic electronic music, visionary art and community living by the water.
Beyond the music — psytrance, psychedelic, world, downtempo, psy-techno — Boom presents itself as a “transformational” festival: workshops, talks, wellness spaces and visionary art installations mix in with the dance stages. The Dance Temple, the main stage set directly on the reservoir's water, has become the festival's most recognisable image.
The biennial format (one edition every two years, on odd years) is part of Boom's identity: no 2026 edition, the next one really does fall in 2027. Eight days by the water in the middle of the Portuguese summer, with camping that becomes, for many festival-goers, a genuine break into communal living rather than just somewhere to sleep.
"Confirmed": read on the festival's official website. "To reconfirm": announced, but not yet rechecked by us. "Estimate" or "upcoming": not yet announced by the organiser. See the official website
Capacity, atmosphere, crowd, hours and on-site budget: the full profile of Boom Festival 2027 before you get your tickets.
Psytrance, psychedelic music, world and downtempo, across several stages including the famous Dance Temple set on the water.
Workshops, talks, wellness and visionary arts round out the music lineup — more a life experience than just a concert.
The festival is held on the banks of the Marechal Carmona reservoir, on the private Herdade da Granja estate — swimming and floating stages are part of the experience.
Created in 1997, Boom became biennial: no edition on even years, which makes every return highly anticipated by its international community.
Late July in central Portugal, temperatures regularly top 30°C: sun protection, hydration and light clothing are essential over eight days.
The festival usually publishes its prices a few months before the edition — to be updated once officially announced.
Dates, hours, transport and lodging: what you need to know before you go.
Eight days, July 18 to 25, 2027 — a long format designed for real immersion rather than just a weekend. No 2027 lineup announced yet.
2027 prices not yet published. Sales expected on boomfestival.org closer to the edition.
The site runs largely self-sufficiently: food, markets and wellness spaces are built into the campsite, designed for a multi-day stay.
Idanha-a-Nova is a rural area of central Portugal, with no direct rail link: a car remains the simplest way to get there, from Lisbon or Madrid.
Late July in central Portugal: dry, intense heat, little rain expected — swimming in the reservoir is one of the ways to cool off on site.
Information last updated on October 4, 2026
The official teaser (2018), published by the Boom Festival channel, as no full aftermovie was found.
The Boom Festival 2027 line-up hasn't been revealed yet. We'll update this page as soon as it's announced.
Line-up coming soon
The first names usually drop in autumn, several months before the festival. Come back then: the full day-by-day line-up will show up here.
At 6am, a ten-minute journey can feel very long. Pick the right home base now, and the route that leaves you enough energy for the rest.
Flight, train, bus or carpooling: compare the options side by side with your real dates. The idea is to arrive with a bit of battery left — you included.
Bars, restaurants, spots worth a visit between two shows: enough to fill the gaps in the schedule without improvising on the spot at the last minute.
The Dance Temple in 2012, a flame rising above the crowd, and a view of the site in 2004 — the waterside atmosphere that's Boom Festival's signature.
Photo credits: Serialslb · Wikimedia Commons · CC BY-SA 3.0, Artem Kavalerov · Wikimedia Commons · CC0, Andy Weisner · Wikimedia Commons · CC BY-SA 2.0.
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