Why the Blue Lagoon sometimes closes — and how to check before you go

The Blue Lagoon closes from time to time for one reason: it sits in the middle of an active volcanic zone. This is an evergreen explainer of why that happens, what a closure means for your booking, and how to check the real status — because no travel page, including this one, can tell you whether it is open on your date.

Why does the Blue Lagoon close sometimes?

Because of where it is. The Blue Lagoon and the neighbouring Svartsengi geothermal plant sit on the Reykjanes peninsula, about 50 km southwest of Reykjavík and right next to the fishing town of Grindavík.

Reykjanes had been volcanically quiet for roughly 800 years, then reawakened. Fagradalsfjall erupted in 2021 and again in 2022 and 2023, and from late 2023 a new series of eruptions opened along the Sundhnúkur crater row beside Grindavík. The town was evacuated in November 2023.

The lagoon is only a few kilometres from those fissures. So when the Icelandic Met Office (Veðurstofa) and Civil Protection (Almannavarnir) judge that magma movement or a possible eruption raises the risk, the Blue Lagoon closes and evacuates as a precaution, then reopens once the authorities clear the area. It has done this repeatedly since November 2023 — which is why this is a pattern to plan around, not a freak event.

What happens to your booking if it closes?

When the lagoon has closed, it has refunded or rescheduled affected bookings and contacted guests directly, usually by email. A closure is a safety decision, not a normal cancellation, so the venue absorbs it rather than charging you a no-show.

That said, the exact terms are the Blue Lagoon’s own and can change, so check the confirmation email for your booking and the official site for the current policy. Don’t assume a third-party reseller handles a volcanic closure the same way — if you booked through an agent or a package, confirm the refund path with them too.

How do you check whether the Blue Lagoon is open?

On the day, from official sources — never a static page:

• The official Blue Lagoon website — bluelagoon.com. They post opening status and contact booked guests first. This is the single source of truth for the venue itself.
• SafeTravel — Iceland’s official travel-safety service — for the wider Reykjanes situation: alerts, road closures and evacuation notices.
• Icelandic Met Office — for the underlying volcanic picture, including the hazard assessment and maps for the Sundhnúkur / Grindavík area.

Check status the morning you plan to go, not the week before. The situation can change within hours, which is exactly why this page won’t quote a status — it would be out of date before you read it. If you’re already watching conditions, our note on how to check road conditions in Iceland uses the same official-source habit.

What can you do instead if it’s closed?

Plenty — and most of it is nowhere near Reykjanes:

• Sky Lagoon (Reykjavík) — a polished geothermal spa on the city shoreline with an infinity edge and a seven-step steam “ritual.” It’s closer to central Reykjavík than the Blue Lagoon and completely unaffected by Reykjanes.
• Reykjavík’s public pools (sundlaug) — Laugardalslaug, Vesturbæjarlaug and Sundhöllin, around 1,200 ISK with hot pots included. Cheaper, more local, and what Icelanders actually use — see things to do in Reykjavík.
• Hot springs away from the peninsula — Hvammsvík in Hvalfjörður, the Secret Lagoon on the Golden Circle, or the hike-in river at Reykjadalur. Compare them all in our hot springs and geothermal pools guide.

Should you still book the Blue Lagoon?

Yes — but book it like a maybe, not a fixture. While Reykjanes stays active, the smart move is the flexible or refundable rate, a fallback soak lined up (Sky Lagoon or a town pool), and a status check on the morning of your visit. Dressed with that mindset, a closure costs you a swap of plans, not a wasted day. Locals have simply stopped treating the Blue Lagoon as guaranteed since 2023.

See also

• Hot springs and geothermal pools — every geothermal option, ranked by region and budget
• Things to do in Reykjavík — Sky Lagoon and the city pools
• How to check road conditions in Iceland — the same check-the-official-source habit
• Official status: Blue Lagoon · SafeTravel · Icelandic Met Office