Jellyfish at Bottle Beach (Haad Khuat)

หาดขวด · Koh Phangan · Gulf of Thailand

Risk today · 25 Oct 2026Moderate

Main factor: Stronger wind than usual

Conditions or reports nearby make an encounter more likely.

Today the jellyfish risk at Bottle Beach (Haad Khuat) Beach is moderate. Main factor: stronger wind than usual. 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 SW — Wind: up to 4 m/s, blowing from SW. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.1 m — Waves: up to 0.1 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.5 mm — Rain: 5 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  2. TomorrowModerate4 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.0.3 m — Waves: up to 0.3 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.4 mm — Rain: 4 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  3. Tue 27Moderate6 m/s SE — Wind: up to 6 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.13 mm — Rain: 13 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  4. Wed 28Moderate6 m/s E — Wind: up to 6 m/s, blowing from E. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.3 m — Waves: up to 0.3 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.7 mm — Rain: 7 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  5. Thu 29Moderate6 m/s E — Wind: up to 6 m/s, blowing from E. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.2 m — Waves: up to 0.2 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.42 mm — Rain: 42 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  6. Fri 30Moderate6 m/s E — Wind: up to 6 m/s, blowing from E. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.3 m — Waves: up to 0.3 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.

Why this level

  • Other jellyfish and stinging plankton Moderateraises risk
    above usual for the season · stronger wind than usual · waves toward the shore
  • Bluebottles (Portuguese man o’ war) Moderateraises risk
    above usual for the season · stronger wind than usual · steady onshore wind
  • Box jellyfish Lowusual background
    calm water and rain, usual for the season

October is an average month for jellyfish on the Samui archipelago, the wind blows from the sea (~-0.5 m/s), the sea is calm (waves ~0.1 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.

Bottle Beach (Haad Khuat): jellyfish month by month

  1. January: Usually moderate risk. High risk on 0% of days. Onshore wind on 64% of days. Official warnings: 0.
  2. February: Usually moderate risk. High risk on 9% of days. Onshore wind on 21% of days. Official warnings: 0. Eyewitness reports: 1.
  3. March: Usually moderate risk. High risk on 13% of days. Onshore wind on 7% of days. Official warnings: 0.
  4. April: Usually moderate risk. High risk on 0% of days. Onshore wind on 8% of days. Official warnings: 0.
  5. May: Usually moderate risk. High risk on 0% of days. Onshore wind on 5% of days. Official warnings: 0. Eyewitness reports: 1.
  6. June: Usually moderate risk. High risk on 0% of days. Onshore wind on 3% of days. Official warnings: 0.
  7. July: Usually moderate risk. High risk on 15% of days. Onshore wind on 0% of days. Official warnings: 1.
  8. August: Usually moderate risk. High risk on 7% of days. Onshore wind on 3% of days. Official warnings: 0. Eyewitness reports: 6.
  9. September: Usually moderate risk. High risk on 6% of days. Onshore wind on 7% of days. Official warnings: 0. Eyewitness reports: 1.
  10. October: Usually moderate risk. High risk on 8% of days. Onshore wind on 62% of days. Official warnings: 0.
  11. November: Usually moderate risk. High risk on 1% of days. Onshore wind on 82% of days. Official warnings: 0.
  12. December: Usually moderate risk. High risk on 0% of days. Onshore wind on 96% of days. Official warnings: 0.
  • 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: 9.7933, 100.0358

Questions and answers

Can I swim at Bottle Beach (Haad Khuat) today?

Today's estimated risk is moderate; main factor: stronger wind than usual. 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 Bottle Beach (Haad Khuat) 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 Bottle Beach (Haad Khuat)?

Based on 2022–2026 weather, the risk is most often elevated in July, August, September. Official warnings nearby: 1.

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.