Buyers often ask us about the 2004 tsunami. This guide sets out what happened, what has been built since, and what to check about a particular property.

1. What happened on 26 December 2004, and what changed

At 7:58 in the morning of 26 December 2004, an earthquake of magnitude 9.1–9.3 struck off the west coast of Sumatra. It was one of the most powerful earthquakes ever recorded. The tsunami it set off crossed the Andaman Sea and reached Thailand's west coast about two hours later. [1]

In Phuket, the waves hit the beaches that face the open Andaman Sea on the west coast. Patong was among the hardest hit, and Kamala, Karon, Kata and Nai Yang were also badly damaged. [3][4] Around 250 people died in Phuket. Across Thailand more than 5,000 deaths were confirmed and thousands more people were listed as missing. Most of them were in Khao Lak, in neighbouring Phang Nga province. [2][5]

At the time Thailand had no tsunami warning system and no evacuation plan for its six Andaman provinces. Few residents or visitors knew the warning signs. [6] One of the best-known stories from that morning is that of Tilly Smith, a ten-year-old British girl on Mai Khao beach. She recognised the sea drawing back from a geography lesson, and her warning helped clear the beach before the waves arrived. [7]

The Ban Nam Khem Tsunami Memorial Park in Phang Nga covers about 8,000 m². Its memorial wall bears the names of more than 1,400 victims. [8]

What changed afterwards is the subject of the next section: a national warning centre, warning towers along the coast, marked evacuation routes and regular drills. [6]

2. How Phuket is warned and evacuated today

Since 2004 Thailand has built a warning chain that runs from the open ocean to the beach:

  • Detection. The National Disaster Warning Center monitors earthquakes and ocean data and issues tsunami warnings. [6] The Indian Ocean Tsunami Warning and Mitigation System, run with UNESCO, has been fully operational since 2011 and shares data between the countries around the Indian Ocean. [9]
  • Confirmation at sea. Thailand operates two deep-ocean buoys, one in the Indian Ocean and one in the Andaman Sea, and two automatic tide gauges near the coast. One is on Racha Noi Island, off Phuket; the other is on Miang Island, Phang Nga. [6] The buoys must be replaced about every two years, and the Andaman Sea buoy has been off station at times. Officials say warnings do not depend on one buoy, because the system also uses international data, seismic monitoring and the tide gauges. [10]
  • Warning on the beach. Along the six Andaman provinces there are 130 warning towers, 47 evacuation towers and 22 information towers. [6] Phuket has about 19 warning towers along its coast. [11] Alarm messages are broadcast in five languages: Thai, English, Chinese, German and Japanese. [6]
  • On mobile phones. In 2025 the Department of Disaster Prevention and Mitigation tested Cell Broadcast alerts, which send warnings straight to phones in an area. The tests included Phuket. [12]
  • Evacuation routes and drills. Signs mark the evacuation routes from the main beaches to higher ground. Each local administration chooses its routes and maintains the signs and safe zones. [13] Drills are held regularly. In June 2025, more than 1,000 people took part in a drill at Kamala Beach. In July 2025, Patong ran a full-scale drill along its marked route from the beach through Soi Bangla. [14][15]

3. Beachfront and higher ground: the areas we list

Phuket has a ridge of hills running down its centre. In 2004 the damage was concentrated on the west-coast beaches that face the open sea. The east coast, which faces the sheltered Phang Nga Bay, was much less exposed. [3][16] The table groups the areas where we list property. Within each area, homes range from the sand to the hillside, so the questions in section 4 apply to each property, not to an area.

WhereAreas we listSetting
West-coast beachesBang Tao, Laguna, Layan, Surin, Kamala, Patong, Kata, Karon, Kalim, Naithon, Nai Yang, Mai Khao, Nai HarnBeach-level homes face the open Andaman Sea. Patong, Kamala, Karon, Kata and Nai Yang were among the beaches hit in 2004 [3][4]
West-coast hillsidesThe hills above Kamala, Surin, Layan, Naithon, Kalim, Patong, Kata and KaronHomes set up the hillside, often with a sea view. Many of our listings in these areas describe themselves as "elevated" or "hillside"
InlandCherngtalay, Pasak, Thalang, Kathu, Manick, Bang Joh, Phuket TownAway from the shore
East and south coastCape Yamu, Ao Po, Pa Klok, Koh Kaew, Panwa, Ao Yon, Chalong, RawaiCoastline facing Phang Nga Bay and the south of the island, more sheltered than the west coast in 2004 [16]
Phang Nga coast, north of PhuketNatai, Khao LakBeach-level on the Andaman Sea. Khao Lak was the worst-hit area in Thailand in 2004 [2][5]

The coast's own features also matter. Natural features along the shore absorb part of a wave's energy, which is one reason to look at what lies between a house and the sea:

Natural featureFunctionAdditional benefits
Sand dunesAbsorb wave energyPrevent soil erosion
Coastal forestsReduce wind and wave damageSupport wildlife habitats
WetlandsAbsorb excess waterImprove water quality

For buyers who want a sea view without a beach-level plot, our sea-view villas page shows where the sea-view homes we list are and what they cost.

4. What to check before buying a beachfront villa

These are practical questions to ask about any home near the sea. Our team can help you get the answers.

  1. Height above sea level. Ask for the plot's elevation, and look at it on a topographic map.
  2. Distance from the shoreline. Ask how far the house is from the high-tide line, and what lies between them: dunes, a road, open ground or other buildings.
  3. The nearest evacuation route. Walk from the house to the nearest marked route and the nearest high ground, and time it. Note where the closest warning tower and evacuation tower are.
  4. Upper floors. A house with a solid upper floor or a roof terrace gives a place to go up to, as well as away.
  5. Alerts. Check that your phone receives Thailand's Cell Broadcast alerts, and note the sound and wording of the beach towers' alarm.
  6. Insurance. Ask insurers whether a policy covers tsunami and flood damage, and on what terms.
  7. Permits and coastal building rules. Our team and independent lawyers will walk you through this.

5. Ocean Worldwide and 2004

Ocean Worldwide was founded in Phuket in February 2004, ten months before the tsunami. We were here when it happened, and we have watched the coast rebuild in the years since: the warning towers go up, the drills become routine and the beaches recover. It is also why we take the question seriously when a buyer asks it. We would rather walk a property with you and talk through where it sits than leave you wondering.

One thing we have seen first-hand, and that surprises most buyers, is that the Phuket property market did not collapse after the tsunami. It grew. Within a few years, demand and prices were higher than before 2004. The same happened after every crisis since: the 2008 financial crisis, the political unrest, and most recently Covid, after which Phuket saw one of its strongest periods of villa demand on record. [17] Phuket has proved resilient every time.

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Questions buyers ask

Is Phuket safe from tsunamis today?

No coast can be made free of tsunami risk, but Phuket now has what it lacked in 2004: a national warning centre, deep-ocean buoys and tide gauges, warning towers along the coast, phone alerts, marked evacuation routes and regular drills. [6][12]

Which parts of Phuket were hit in 2004?

The west-coast beaches facing the open Andaman Sea, including Patong, Kamala, Karon, Kata and Nai Yang. The sheltered east coast was much less exposed. The worst-hit area in Thailand was Khao Lak in Phang Nga. [2][3][4][16]

How will I know if a tsunami warning is issued?

Through the coastal warning towers, which sound an alarm in five languages, Cell Broadcast alerts on mobile phones, and local announcements. [6][12]

Where are the evacuation routes?

Signs mark the routes from the main beaches to higher ground. Each local administration maintains its own. [13]

Should I avoid buying on the beach?

That depends on the property. Check its height, its distance from the sea and the walk to higher ground (section 4), and compare it with homes on the hillsides above the same beaches.

Are there memorials to the 2004 victims?

Yes. The best known is the Ban Nam Khem Tsunami Memorial Park in Phang Nga, whose wall carries more than 1,400 names. [8]

Sources

  1. Wikipedia, 2004 Indian Ocean earthquake and tsunami (USGS magnitude, time, arrival in Thailand): https://en.wikipedia.org/wiki/2004_Indian_Ocean_earthquake_and_tsunami
  2. Same article, Thailand section (deaths and missing; Khao Lak).
  3. NASA Earth Observatory, Phuket, Thailand (26 Dec 2004 image; west-coast beaches "bore the brunt", "particularly severe on Patong Beach"): https://science.nasa.gov/earth/earth-observatory/phuket-thailand-5129
  4. Wikipedia, Kamala Beach ("Kamala suffered severe damage"): https://en.wikipedia.org/wiki/Kamala_Beach
  5. The Phuket News, 20th-anniversary coverage, Dec 2024 (Phuket: 259 confirmed dead; Phang Nga figures).
  6. Department of Disaster Prevention and Mitigation, Ministry of Interior, Thailand's Progress 20 Years After the Indian Ocean Tsunami, The ASEAN Magazine, 8 Oct 2024: https://theaseanmagazine.asean.org/article/thailands-progress-20-years-after-the-indian-ocean-tsunami/
  7. Wikipedia, Tilly Smith: https://en.wikipedia.org/wiki/Tilly_Smith
  8. Ban Nam Khem Tsunami Memorial Park, Phang Nga (area and number of names): visitor information published by Khao Lak Center and GVI.
  9. UNESCO IOC, Indian Ocean Tsunami Warning and Mitigation System (operational 2011; IOWAVE11 exercise): https://legacy.ioc-tsunami.org/
  10. AFP via eNCA, The tsunami detection buoys safeguarding lives in Thailand, Dec 2024: https://www.enca.com/opinion/tsunami-detection-buoys-safeguarding-lives-thailand
  11. The Phuket News, Phuket disaster chief calls for confidence in tsunami warning system, 2022: https://www.thephuketnews.com/phuket-disaster-chief-calls-for-confidence-in-tsunami-warning-system-84919.php
  12. Thai Government Public Relations Department, Phuket Tests New Emergency Alert System and Thailand to Begin Cell Broadcast Alert Testing in May, 2025: https://thailand.prd.go.th/en/content/category/detail/id/52/iid/378854
  13. The Phuket News, Phuket tsunami evacuation routes under full review, 2018: https://www.thephuketnews.com/phuket-tsunami-evacuation-routes-under-full-review-68967.php
  14. The Phuket News, Phuket leads major tsunami drill (Kamala, 27 June 2025, C-MEX 25): https://www.thephuketnews.com/phuket-leads-major-tsunami-drill-96745.php
  15. The Phuket News, Patong holds tsunami evacuation drill (29 July 2025): https://www.thephuketnews.com/patong-holds-tsunami-evacuation-drill-97080.php
  16. Phuket 101, Memories of the Phuket Tsunami (the sheltered east coast, Phuket Town, Chalong and Ao Po barely affected): https://www.phuket101.net/phuket-tsunami/
  17. Knight Frank Thailand, Phuket Villa & Condominium Market 2024: "In 2024, the real estate sector in Phuket saw its most vibrant year in a decade"; "573 villas were sold, reflecting an 18.1% year-on-year increase. The villa market has remained resilient since the COVID-19 pandemic." https://content.knightfrank.com/research/2838/documents/en/phuket-villa-condominium-market-2024-12106.pdf
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