Jellyfish at Ao Thian (Candlelight Beach)

อ่าวเทียน · Koh Samet · Gulf of Thailand

Risk today · 25 Oct 2026Moderate

Main factor: Rain

Conditions or reports nearby make an encounter more likely.

Today the jellyfish risk at Ao Thian (Candlelight Beach) Beach is moderate. Main factor: 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. TodayModerate3 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.2 mm — Rain: 2 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.9 mm — Rain: 9 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  3. Tue 27Moderate3 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.0.3 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.
  4. Wed 28Moderate3 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.0.2 m — Waves: up to 0.2 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.
  5. Thu 29Moderate2 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.0.2 m — Waves: up to 0.2 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.
  6. Fri 30Moderate3 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.0.1 m — Waves: up to 0.1 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.2 mm — Rain: 2 mm in the day. Box jellyfish are more common near river mouths after heavy rain.

Why this level

  • Box jellyfish Moderateraises risk
    above usual for the season · rain · stronger wind than usual
  • Other jellyfish and stinging plankton Moderateusual background
    jellyfish season in this area, usual for the season
  • Bluebottles (Portuguese man o’ war) Moderateraises risk
    above usual for the season · steady onshore wind for 3 days · stronger wind than usual

October is an average month for jellyfish on the eastern Gulf coast, the wind blows from the sea (~2.1 m/s), stronger than usual, the wind has blown from the sea for 3 days in a row, which is how bluebottles usually arrive, the sea is calm (waves ~0.2 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.

LowModerateHighVery high

Seasonality

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

Ao Thian (Candlelight Beach): jellyfish month by month

  1. January: Usually low risk. High risk on 0% of days. Onshore wind on 50% of days. Official warnings: 0.
  2. February: Usually moderate risk. High risk on 11% of days. Onshore wind on 60% of days. Official warnings: 0.
  3. March: Usually moderate risk. High risk on 8% of days. Onshore wind on 93% of days. Official warnings: 0. Eyewitness reports: 1.
  4. April: Usually moderate risk. High risk on 0% of days. Onshore wind on 96% of days. Official warnings: 0.
  5. May: Usually moderate risk. High risk on 0% of days. Onshore wind on 71% of days. Official warnings: 0.
  6. June: Usually moderate risk. High risk on 3% of days. Onshore wind on 17% of days. Official warnings: 0. Eyewitness reports: 2.
  7. July: Usually moderate risk. High risk on 27% of days. Onshore wind on 16% of days. Official warnings: 0.
  8. August: Usually moderate risk. High risk on 38% of days. Onshore wind on 19% of days. Official warnings: 0.
  9. September: Usually moderate risk. High risk on 16% of days. Onshore wind on 20% of days. Official warnings: 0.
  10. October: Usually moderate risk. High risk on 8% of days. Onshore wind on 53% of days. Official warnings: 0.
  11. November: Usually low risk. High risk on 0% of days. Onshore wind on 54% of days. Official warnings: 0.
  12. December: Usually low risk. High risk on 0% of days. Onshore wind on 35% 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: 12.5486, 101.4500

Questions and answers

Can I swim at Ao Thian (Candlelight Beach) today?

Today's estimated risk is moderate; main factor: 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 Ao Thian (Candlelight 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 Ao Thian (Candlelight Beach)?

Based on 2022–2026 weather, the risk is most often elevated in July, August, September. Official warnings nearby: 0.

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.