Jellyfish at Hat Chao Mai

หาดเจ้าไหม · Trang · Andaman Sea

Risk today · 25 Oct 2026Low

Main factor: Calm water and rain

No jellyfish reports; conditions are typical for the season.

Today the jellyfish risk at Hat Chao Mai Beach is low. Main factor: calm water and rain. In October it is usually low here. It is an estimate, not a guarantee: follow beach flags and lifeguards.

What to expect today

5-day outlook

  1. TodayLow3 m/s N — Wind: up to 3 m/s, blowing from N. 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.43 mm — Rain: 43 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  2. TomorrowLow3 m/s E — Wind: up to 3 m/s, blowing from E. 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.36 mm — Rain: 36 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  3. Tue 27Low4 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.0.4 m — Waves: up to 0.4 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.
  4. Wed 28Low3 m/s E — Wind: up to 3 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.9 mm — Rain: 9 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  5. Thu 29Low3 m/s SE — Wind: up to 3 m/s, blowing from SE. 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.24 mm — Rain: 24 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  6. Fri 30Low3 m/s E — Wind: up to 3 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.12 mm — Rain: 12 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 Lowlowers risk
    below usual for the season
  • Bluebottles (Portuguese man o’ war) Lowlowers risk
    below usual for the season

It is not jellyfish season in Trang, the wind is light or along the shore, the sea is calm (waves ~0.3 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.

Hat Chao Mai: jellyfish month by month

  1. January: Usually moderate risk. High risk on 0% of days. Onshore wind on 0% of days. Official warnings: 0.
  2. February: Usually moderate risk. High risk on 0% of days. Onshore wind on 10% of days. Official warnings: 2. Eyewitness reports: 2.
  3. March: Usually moderate risk. High risk on 1% of days. Onshore wind on 23% of days. Official warnings: 0.
  4. April: Usually moderate risk. High risk on 15% of days. Onshore wind on 61% of days. Official warnings: 0. Eyewitness reports: 1.
  5. May: Usually moderate risk. High risk on 24% of days. Onshore wind on 73% of days. Official warnings: 0.
  6. June: Usually moderate risk. High risk on 12% of days. Onshore wind on 91% of days. Official warnings: 0. Eyewitness reports: 2.
  7. July: Usually moderate risk. High risk on 2% of days. Onshore wind on 96% of days. Official warnings: 0.
  8. August: Usually moderate risk. High risk on 1% of days. Onshore wind on 98% of days. Official warnings: 0.
  9. September: Usually moderate risk. High risk on 7% of days. Onshore wind on 95% of days. Official warnings: 0.
  10. October: Usually low risk. High risk on 0% of days. Onshore wind on 52% of days. Official warnings: 0.
  11. November: Usually moderate risk. High risk on 0% of days. Onshore wind on 18% of days. Official warnings: 0.
  12. December: Usually low risk. High risk on 0% of days. Onshore wind on 0% 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: 7.3062, 99.3965

Questions and answers

Can I swim at Hat Chao Mai 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 Hat Chao Mai 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 Hat Chao Mai?

Based on 2022–2026 weather, the risk is most often elevated in March, April, May. 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.