Jellyfish in Thailand today
Estimated chance of meeting jellyfish on 162 Thai beaches — today and for the next 5 days.
Marker colour is the estimated risk for the selected day. It is an estimate, not a guarantee: "no reports" does not mean there are no jellyfish. Updated: 22 Oct 2026, 15:39
Andaman Sea
Gulf of Thailand
- Koh Phangan10 beachesModerate
- Koh Samui10 beachesModerate
- Hua Hin & Pranburi7 beachesModerate
- Koh Samet7 beachesModerate
- Pattaya7 beachesModerate
- Koh Chang6 beachesModerate
- Khanom & Sichon5 beachesModerate
- Koh Larn5 beachesModerate
- Koh Tao5 beachesHigh
- Chanthaburi3 beachesModerate
- Chumphon3 beachesModerate
- Koh Kood3 beachesModerate
- Rayong3 beachesModerate
- Songkhla3 beachesModerate
- Cha-am2 beachesModerate
- Koh Mak2 beachesModerate
- Narathiwat2 beachesModerate
- Pattani2 beachesModerate
- Prachuap Khiri Khan2 beachesModerate
- Bang Saen1 beachesModerate
Questions and answers
Are there jellyfish in Thailand right now?
Today's estimate across 162 beaches: low — 64, moderate — 97, high — 1. Official DMCR warnings 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 Thailand?
On the Andaman coast (Phuket, Krabi, Khao Lak) the risk peaks in May, June, July, August. In the Gulf (Samui, Phangan, Pattaya, Hua Hin): August, September, October, November. Bluebottles mostly arrive with steady onshore wind.
Which jellyfish in Thailand are dangerous?
The most dangerous are box jellyfish (sea wasps): a severe sting can stop breathing. Portuguese man o’ war (bluebottle) stings are very painful. Sea nettles sting hard too; moon jellies and most other species are nearly harmless.
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.
Is it OK to swim if there are no jellyfish reports?
It is an estimate, not a guarantee: "no reports" does not mean there are no jellyfish. Check beach flags and follow lifeguards.