Jellyfish on the Samui archipelago in October
October on the Samui archipelago is a month of moderate risk. The prevailing wind of about 2.7 m/s is blowing along the shore; mean waves 0.2 m, water 30.3 °C. Based on 2022–2026 weather the model rates about 7% of days in this month as high risk. Official DMCR jellyfish warnings in October: 0.
| Wind | 2.7 m/s |
|---|---|
| Onshore wind | 0.06 m/s |
| Waves | 0.2 m |
| Water | 30.3 °C |
| Rain | 269 mm · 27.1 days |
Areas this month
- Ang Thong Marine ParkModerate18% days with high risk
- Koh PhanganModerate10% days with high risk
- Koh TaoModerate13% days with high risk
- Surat Thani coastModerate3% days with high risk
- Koh SamuiModerate1% days with high risk
Official cases in October
No official warnings nearby in this month.
Samui archipelago: jellyfish month by month
- 0%Jan132January: Usually moderate risk. High risk on 0% of days. Onshore wind on 52% of days. Official warnings: 1. Eyewitness reports: 32.
- 9%Feb34February: Usually moderate risk. High risk on 9% of days. Onshore wind on 42% of days. Official warnings: 0. Eyewitness reports: 34.
- 18%Mar153March: Usually moderate risk. High risk on 18% of days. Onshore wind on 40% of days. Official warnings: 1. Eyewitness reports: 53.
- 7%Apr31April: Usually moderate risk. High risk on 7% of days. Onshore wind on 43% of days. Official warnings: 0. Eyewitness reports: 31.
- 1%May28May: Usually moderate risk. High risk on 1% of days. Onshore wind on 42% of days. Official warnings: 0. Eyewitness reports: 28.
- 0%Jun31June: Usually moderate risk. High risk on 0% of days. Onshore wind on 42% of days. Official warnings: 0. Eyewitness reports: 31.
- 10%Jul297July: Usually moderate risk. High risk on 10% of days. Onshore wind on 41% of days. Official warnings: 2. Eyewitness reports: 97.
- 18%Aug99+August: Usually moderate risk. High risk on 18% of days. Onshore wind on 42% of days. Official warnings: 0. Eyewitness reports: 164.
- 5%Sep93September: Usually moderate risk. High risk on 5% of days. Onshore wind on 43% of days. Official warnings: 0. Eyewitness reports: 93.
- 7%Oct80October: Usually moderate risk. High risk on 7% of days. Onshore wind on 53% of days. Official warnings: 0. Eyewitness reports: 80.
- 3%Nov22November: Usually moderate risk. High risk on 3% of days. Onshore wind on 56% of days. Official warnings: 0. Eyewitness reports: 22.
- 1%Dec22December: Usually moderate risk. High risk on 1% of days. Onshore wind on 59% of days. Official warnings: 0. Eyewitness reports: 22.
- typical level that month
- bar and % — share of high-risk days
- nofficial warnings, all years
- neyewitness reports, all years
Questions and answers
Are there jellyfish on the Samui archipelago in October?
Based on 2022–2026 weather, in October the risk on the Samui archipelago was high on 7% of days and the wind blew from the sea on 53% of days. Official DMCR warnings in this month over all years: 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?
The risk is most often elevated in July, August, September.
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.




