Jellyfish at Nai Thon Beach

หาดในทอน · Phuket · Andaman Sea

Risk today · 24 Oct 2026Low

Main factor: Calm water and rain

No jellyfish reports; conditions are typical for the season.

Today the jellyfish risk at Nai Thon Beach is low. Main factor: calm water and rain. 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. TodayLow4 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.0.6 m — Waves: up to 0.6 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.10 mm — Rain: 10 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  2. TomorrowLow4 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.0.8 m — Waves: up to 0.8 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.21 mm — Rain: 21 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  3. Mon 26Low3 m/s S — Wind: up to 3 m/s, blowing from S. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.1.0 m — Waves: up to 1.0 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.28 mm — Rain: 28 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  4. Tue 27Moderate3 m/s S — Wind: up to 3 m/s, blowing from S. 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.51 mm — Rain: 51 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  5. Wed 28Moderate2 m/s NE — Wind: up to 2 m/s, blowing from NE. The arrow shows where it blows to. Onshore wind pushes jellyfish to the beach.0.6 m — Waves: up to 0.6 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.3 mm — Rain: 3 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  6. Thu 29Low3 m/s NE — Wind: up to 3 m/s, blowing from NE. 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.1 mm — Rain: 1 mm in the day. Box jellyfish are more common near river mouths after heavy rain.

Why this level

  • Box jellyfish Lowlowers risk
    below usual for the season
  • Other jellyfish and stinging plankton Lowraises risk
    above usual for the season · waves toward the shore · stronger wind than usual
  • Bluebottles (Portuguese man o’ war) Lowlowers risk
    below usual for the season

It is not jellyfish season on Phuket's west coast, the wind is light or along the shore, moderate waves (~0.6 m), so the risk level is low. 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.

Nai Thon: jellyfish month by month

  1. 9%Jan10January: Usually moderate risk. High risk on 9% of days. Onshore wind on 4% of days. Official warnings: 0. Eyewitness reports: 10.
  2. 13%Feb5February: Usually moderate risk. High risk on 13% of days. Onshore wind on 12% of days. Official warnings: 0. Eyewitness reports: 5.
  3. 5%Mar10March: Usually moderate risk. High risk on 5% of days. Onshore wind on 23% of days. Official warnings: 0. Eyewitness reports: 10.
  4. 9%Apr5April: Usually moderate risk. High risk on 9% of days. Onshore wind on 61% of days. Official warnings: 0. Eyewitness reports: 5.
  5. 40%May16May: Usually moderate risk. High risk on 40% of days. Onshore wind on 73% of days. Official warnings: 1. Eyewitness reports: 6.
  6. 28%Jun8June: Usually moderate risk. High risk on 28% of days. Onshore wind on 95% of days. Official warnings: 0. Eyewitness reports: 8.
  7. 16%Jul7July: Usually moderate risk. High risk on 16% of days. Onshore wind on 97% of days. Official warnings: 0. Eyewitness reports: 7.
  8. 22%Aug1August: Usually moderate risk. High risk on 22% of days. Onshore wind on 99% of days. Official warnings: 0. Eyewitness reports: 1.
  9. 15%Sep134September: Usually moderate risk. High risk on 15% of days. Onshore wind on 95% of days. Official warnings: 1. Eyewitness reports: 34.
  10. 8%Oct1October: Usually moderate risk. High risk on 8% of days. Onshore wind on 74% of days. Official warnings: 0. Eyewitness reports: 1.
  11. 0%Nov1November: Usually low risk. High risk on 0% of days. Onshore wind on 25% of days. Official warnings: 0. Eyewitness reports: 1.
  12. 2%Dec7December: Usually moderate risk. High risk on 2% of days. Onshore wind on 3% of days. Official warnings: 0. Eyewitness reports: 7.
  • typical level that month
  • bar and % — share of high-risk days
  • nofficial warnings, all years
  • neyewitness reports, all years

Coordinates: 8.0547, 98.2767

Questions and answers

Can I swim at Nai Thon Beach today?

Today's estimated risk is low; main factor: calm water and rain. 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 Nai Thon Beach 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 Nai Thon Beach?

Based on 2022–2026 weather, the risk is most often elevated in May, June, July. Official warnings nearby: 2.

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.