Jellyfish at Patok Bay (Koh Racha Yai)

อ่าวปะตก · Phuket · Andaman Sea

Risk today · 24 Oct 2026Low

Main factor: Stronger wind than usual

No jellyfish reports; conditions are typical for the season.

Today the jellyfish risk at Patok Bay (Koh Racha Yai) Beach is low. 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. TodayLow8 m/s NW — Wind: up to 8 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.13 mm — Rain: 13 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  2. TomorrowModerate7 m/s NW — Wind: up to 7 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.27 mm — Rain: 27 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  3. Mon 26Moderate6 m/s W — Wind: up to 6 m/s, blowing from W. 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.70 mm — Rain: 70 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  4. Tue 27High9 m/s SW — Wind: up to 9 m/s, blowing from SW. 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.57 mm — Rain: 57 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  5. Wed 28Moderate4 m/s NE — Wind: up to 4 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.5 mm — Rain: 5 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  6. Thu 29Low4 m/s NE — Wind: up to 4 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.8 mm — Rain: 8 mm in the day. Box jellyfish are more common near river mouths after heavy rain.

Why this level

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

It is not jellyfish season on Phuket's west coast, the wind blows from the sea (~4.7 m/s), stronger than usual, 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.

Patok Bay (Koh Racha Yai): jellyfish month by month

  1. 16%Jan1January: Usually moderate risk. High risk on 16% of days. Onshore wind on 7% of days. Official warnings: 0. Eyewitness reports: 1.
  2. 31%FebFebruary: Usually moderate risk. High risk on 31% of days. Onshore wind on 14% of days. Official warnings: 0.
  3. 4%Mar11March: Usually moderate risk. High risk on 4% of days. Onshore wind on 21% of days. Official warnings: 1. Eyewitness reports: 1.
  4. 9%Apr1April: Usually moderate risk. High risk on 9% of days. Onshore wind on 65% of days. Official warnings: 0. Eyewitness reports: 1.
  5. 41%May1May: Usually moderate risk. High risk on 41% of days. Onshore wind on 72% of days. Official warnings: 1.
  6. 33%Jun11June: Usually moderate risk. High risk on 33% of days. Onshore wind on 93% of days. Official warnings: 1. Eyewitness reports: 1.
  7. 23%Jul1July: Usually moderate risk. High risk on 23% of days. Onshore wind on 94% of days. Official warnings: 0. Eyewitness reports: 1.
  8. 29%AugAugust: Usually moderate risk. High risk on 29% of days. Onshore wind on 95% of days. Official warnings: 0.
  9. 8%Sep14September: Usually moderate risk. High risk on 8% of days. Onshore wind on 95% of days. Official warnings: 1. Eyewitness reports: 4.
  10. 5%OctOctober: Usually moderate risk. High risk on 5% of days. Onshore wind on 80% of days. Official warnings: 0.
  11. 1%NovNovember: Usually moderate risk. High risk on 1% of days. Onshore wind on 32% of days. Official warnings: 0.
  12. 10%DecDecember: Usually moderate risk. High risk on 10% of days. Onshore wind on 9% of days. Official warnings: 0.
  • typical level that month
  • bar and % — share of high-risk days
  • nofficial warnings, all years
  • neyewitness reports, all years

Coordinates: 7.6079, 98.3668

Questions and answers

Can I swim at Patok Bay (Koh Racha Yai) today?

Today's estimated risk is low; 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 Patok Bay (Koh Racha Yai) 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 Patok Bay (Koh Racha Yai)?

Based on 2022–2026 weather, the risk is most often elevated in May, June, July. Official warnings nearby: 4.

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.