Jellyfish on the Samui archipelago in September

September on the Samui archipelago is a month of moderate risk. The prevailing wind of about 4.4 m/s is blowing along the shore; mean waves 0.33 m, water 29.9 °C. Based on 2022–2026 weather the model rates about 5% of days in this month as high risk. Official DMCR jellyfish warnings in September: 0.

Typical risk this monthModerate
  • Low 0%
  • Moderate 95%
  • High 5%
  • Very high 0%

How the days of this month split by risk level (2022–2026 weather). A typical day is moderate; 5% of days are high or very high.

Risk today by beach

Wind4.4 m/s
Onshore wind-0.12 m/s
Waves0.33 m
Water29.9 °C
Rain183.6 mm · 23.5 days

Areas this month

Official cases in September

No official warnings nearby in this month.

Jellyfish found here

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.

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.

Questions and answers

Are there jellyfish on the Samui archipelago in September?

Based on 2022–2026 weather, in September the risk on the Samui archipelago was high on 5% of days and the wind blew from the sea on 43% 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.