Jellyfish on the Samui archipelago

Today no beach on the Samui archipelago has a high jellyfish risk: the highest level is moderate (27 of 27). It is an estimate, not a guarantee: follow beach flags and lifeguards.

Jellyfish on the Samui archipelago today and for 5 days: risk on 27 beaches in 5 areas, where it is higher now, when the season is and which species occur.

LowModerateHighVery high

Areas by risk today

  1. Ang Thong Marine Park1 beachModerate
  2. Koh Phangan10 beachesModerate
  3. Koh Samui10 beachesModerate
  4. Koh Tao5 beachesModerate
  5. Surat Thani coast1 beachModerate

Samui archipelago: jellyfish month by month

  1. January: Usually moderate risk. High risk on 0% of days. Onshore wind on 52% of days. Official warnings: 1. Eyewitness reports: 32.
  2. February: Usually moderate risk. High risk on 9% of days. Onshore wind on 42% of days. Official warnings: 0. Eyewitness reports: 34.
  3. March: Usually moderate risk. High risk on 18% of days. Onshore wind on 40% of days. Official warnings: 1. Eyewitness reports: 53.
  4. April: Usually moderate risk. High risk on 7% of days. Onshore wind on 43% of days. Official warnings: 0. Eyewitness reports: 31.
  5. May: Usually moderate risk. High risk on 1% of days. Onshore wind on 42% of days. Official warnings: 0. Eyewitness reports: 28.
  6. June: Usually moderate risk. High risk on 0% of days. Onshore wind on 42% of days. Official warnings: 0. Eyewitness reports: 31.
  7. July: Usually moderate risk. High risk on 10% of days. Onshore wind on 41% of days. Official warnings: 2. Eyewitness reports: 97.
  8. August: Usually moderate risk. High risk on 18% of days. Onshore wind on 42% of days. Official warnings: 0. Eyewitness reports: 164.
  9. September: Usually moderate risk. High risk on 5% of days. Onshore wind on 43% of days. Official warnings: 0. Eyewitness reports: 93.
  10. October: Usually moderate risk. High risk on 7% of days. Onshore wind on 53% of days. Official warnings: 0. Eyewitness reports: 80.
  11. November: Usually moderate risk. High risk on 3% of days. Onshore wind on 56% of days. Official warnings: 0. Eyewitness reports: 22.
  12. December: Usually moderate risk. High risk on 1% of days. Onshore wind on 59% of days. Official warnings: 0. Eyewitness reports: 22.
  • 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.

Jellyfish found here

All jellyfish species in Thailand →

Questions and answers

Are there jellyfish on the Samui archipelago right now?

Today across 27 beaches: moderate — 27. The highest estimate is in Ang Thong Marine Park. 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 on the Samui archipelago?

Based on 2022–2026 weather, the risk on the Samui archipelago is most often elevated in July, August, September. Official DMCR warnings on these beaches: 4.

Which dangerous jellyfish occur on the Samui archipelago?

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.