Jellyfish in Koh Samet

Today no beach in Koh Samet has a high jellyfish risk: the highest level is moderate (7 of 7). It is an estimate, not a guarantee: follow beach flags and lifeguards.

Rayong · Gulf of Thailand · 7 beaches in this area. Level is today's estimated risk.

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Beaches

Koh Samet: jellyfish month by month

  1. January: Usually moderate risk. High risk on 0% of days. Onshore wind on 51% of days. Official warnings: 0. Eyewitness reports: 1.
  2. February: Usually moderate risk. High risk on 10% of days. Onshore wind on 66% of days. Official warnings: 0. Eyewitness reports: 2.
  3. March: Usually moderate risk. High risk on 12% of days. Onshore wind on 88% of days. Official warnings: 0. Eyewitness reports: 3.
  4. April: Usually low risk. High risk on 0% of days. Onshore wind on 94% of days. Official warnings: 0. Eyewitness reports: 1.
  5. May: Usually moderate risk. High risk on 0% of days. Onshore wind on 77% of days. Official warnings: 0.
  6. June: Usually moderate risk. High risk on 4% of days. Onshore wind on 51% of days. Official warnings: 0. Eyewitness reports: 5.
  7. July: Usually moderate risk. High risk on 30% of days. Onshore wind on 44% of days. Official warnings: 0.
  8. August: Usually moderate risk. High risk on 35% of days. Onshore wind on 50% of days. Official warnings: 0.
  9. September: Usually moderate risk. High risk on 13% of days. Onshore wind on 45% of days. Official warnings: 0. Eyewitness reports: 2.
  10. October: Usually moderate risk. High risk on 10% of days. Onshore wind on 43% of days. Official warnings: 0. Eyewitness reports: 1.
  11. November: Usually low risk. High risk on 0% of days. Onshore wind on 37% of days. Official warnings: 0. Eyewitness reports: 2.
  12. December: Usually low risk. High risk on 0% of days. Onshore wind on 28% of days. Official warnings: 0. Eyewitness reports: 1.
  • Low
  • Moderate
  • High
  • Very high

Colour shows the typical risk level that month; the number is the share of high-risk days. Warnings and sightings are in each month’s tooltip.

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Questions and answers

Are there jellyfish in Koh Samet right now?

Today across 7 beaches: moderate — 7. The highest risk is at Ao Cho (stronger wind than usual). Jellyfish reports in the last 7 days: 0. It is an estimate, not a guarantee: "no reports" does not mean there are no jellyfish. Check beach flags and follow lifeguards.

When is jellyfish season in Koh Samet?

Based on 2022–2026 weather, the risk in Koh Samet is most often elevated in July, August, September. Official DMCR warnings nearby: 0.

Which beaches in Koh Samet have the lowest risk today?

Lowest estimate today: Ao Prao, Sai Kaew Beach (Koh Samet), Ao Hin Khok. It is an estimate, not a guarantee: "no reports" does not mean there are no jellyfish. Check beach flags and follow lifeguards.

Which dangerous jellyfish occur in Koh Samet?

Recorded on this coast: Thai box jellyfish (Chironex), Chiropsoides box jellyfish, Morbakka (single-tentacle box jellyfish), Portuguese man o’ war (bluebottle), Sea nettle (fire jellyfish).

What should I do if a jellyfish stings me in Thailand?

Get out of the water. Call 1669 for trouble breathing, chest pain or collapse. Do not rub the sting and do not rinse it with fresh water. If a box jellyfish is possible, pour vinegar over the sting for at least 30 seconds.