Jellyfish at Koh Aeo

เกาะแอว · Phuket · Andaman Sea

Risk today · 25 Oct 2026Moderate

Main factor: Calm sea

Conditions or reports nearby make an encounter more likely.

Today the jellyfish risk at Koh Aeo Beach is moderate. Main factor: calm sea. In October it is usually moderate here. It is an estimate, not a guarantee: follow beach flags and lifeguards.

What to expect today

5-day outlook

  1. TodayModerate4 m/s NW — Wind: up to 4 m/s, blowing from NW. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.7 m — Waves: up to 0.7 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.20 mm — Rain: 20 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  2. TomorrowModerate3 m/s W — Wind: up to 3 m/s, blowing from W. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.9 m — Waves: up to 0.9 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.22 mm — Rain: 22 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  3. Tue 27Moderate3 m/s SW — Wind: up to 3 m/s, blowing from SW. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.8 m — Waves: up to 0.8 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.23 mm — Rain: 23 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  4. Wed 28Low4 m/s S — Wind: up to 4 m/s, blowing from S. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.5 m — Waves: up to 0.5 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.33 mm — Rain: 33 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  5. Thu 29Low4 m/s SE — Wind: up to 4 m/s, blowing from SE. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.4 m — Waves: up to 0.4 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.37 mm — Rain: 37 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  6. Fri 30Low5 m/s SE — Wind: up to 5 m/s, blowing from SE. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.5 m — Waves: up to 0.5 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.23 mm — Rain: 23 mm in the day. Box jellyfish are more common near river mouths after heavy rain.

Why this level

  • Bluebottles (Portuguese man o’ war) Moderateraises risk
    above usual for the season · calm sea · stronger wind than usual
  • Other jellyfish and stinging plankton Lowusual background
    jellyfish season in this area, usual for the season
  • Box jellyfish Lowusual background
    calm water and rain, usual for the season

It is not jellyfish season on Phuket's east coast, the wind is light or along the shore, moderate waves (~0.7 m), so the risk level is moderate. There are no recent jellyfish reports.

Recent reports

No recent reports.

Report jellyfish

At this beach now? Your report helps others. "No jellyfish today" is useful too.

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Seasonality

Bars show the baseline seasonal risk for this coast; dots show official warnings nearby by month.

Koh Aeo: jellyfish month by month

  1. January: Usually moderate risk. High risk on 5% of days. Onshore wind on 100% of days. Official warnings: 0.
  2. February: Usually moderate risk. High risk on 11% of days. Onshore wind on 99% of days. Official warnings: 0.
  3. March: Usually moderate risk. High risk on 1% of days. Onshore wind on 95% of days. Official warnings: 2. Eyewitness reports: 9.
  4. April: Usually moderate risk. High risk on 3% of days. Onshore wind on 74% of days. Official warnings: 0. Eyewitness reports: 5.
  5. May: Usually moderate risk. High risk on 7% of days. Onshore wind on 28% of days. Official warnings: 1.
  6. June: Usually moderate risk. High risk on 20% of days. Onshore wind on 6% of days. Official warnings: 1.
  7. July: Usually moderate risk. High risk on 13% of days. Onshore wind on 1% of days. Official warnings: 1.
  8. August: Usually moderate risk. High risk on 19% of days. Onshore wind on 5% of days. Official warnings: 0.
  9. September: Usually moderate risk. High risk on 12% of days. Onshore wind on 11% of days. Official warnings: 1.
  10. October: Usually moderate risk. High risk on 1% of days. Onshore wind on 59% of days. Official warnings: 0.
  11. November: Usually moderate risk. High risk on 0% of days. Onshore wind on 86% of days. Official warnings: 0.
  12. December: Usually moderate risk. High risk on 0% of days. Onshore wind on 100% of days. Official warnings: 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.

Coordinates: 7.7641, 98.3966

Questions and answers

Can I swim at Koh Aeo today?

Today's estimated risk is moderate; main factor: calm sea. It is an estimate, not a guarantee: "no reports" does not mean there are no jellyfish. Check beach flags and follow lifeguards.

Have jellyfish been seen at Koh Aeo recently?

No reports in the last 14 days. It is an estimate, not a guarantee: "no reports" does not mean there are no jellyfish. Check beach flags and follow lifeguards.

In which months are jellyfish more likely at Koh Aeo?

Based on 2022–2026 weather, the risk is most often elevated in June, July, August. Official warnings nearby: 7.

Who do I call after a jellyfish sting?

Emergency medical services in Thailand: 1669 (free). Alert the beach lifeguard; if a box jellyfish is possible, pour vinegar over the sting for at least 30 seconds.