Jellyfish at Laem Had Beach (Koh Yao Yai)

หาดแหลมหาด · Koh Yao · 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 Laem Had Beach (Koh Yao Yai) 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. TodayLow6 m/s NW — Wind: up to 6 m/s, blowing from NW. 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.17 mm — Rain: 17 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  2. TomorrowLow4 m/s S — Wind: up to 4 m/s, blowing from S. 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.23 mm — Rain: 23 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  3. Tue 27Low4 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.17 mm — Rain: 17 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  4. Wed 28Moderate5 m/s SE — Wind: up to 5 m/s, blowing from SE. 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.44 mm — Rain: 44 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.0.1 m — Waves: up to 0.1 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.30 mm — Rain: 30 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.0.2 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.

Why this level

  • Box jellyfish Lowusual background
    calm water and rain, usual for the season
  • Bluebottles (Portuguese man o’ war) Lowraises risk
    above usual for the season · onshore wind
  • Other jellyfish and stinging plankton Lowusual background
    jellyfish season in this area, usual for the season

It is not jellyfish season in Koh Yao, the wind blows from the sea (~-3.7 m/s), the sea is calm (waves ~0.2 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.

LowModerateHighVery high

Seasonality

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

Laem Had Beach (Koh Yao Yai): jellyfish month by month

  1. January: Usually moderate risk. High risk on 0% of days. Onshore wind on 88% of days. Official warnings: 0.
  2. February: Usually moderate risk. High risk on 0% of days. Onshore wind on 82% of days. Official warnings: 0.
  3. March: Usually moderate risk. High risk on 1% of days. Onshore wind on 70% of days. Official warnings: 0.
  4. April: Usually moderate risk. High risk on 7% of days. Onshore wind on 31% of days. Official warnings: 0. Eyewitness reports: 3.
  5. May: Usually moderate risk. High risk on 14% of days. Onshore wind on 28% of days. Official warnings: 0.
  6. June: Usually moderate risk. High risk on 12% of days. Onshore wind on 4% of days. Official warnings: 0.
  7. July: Usually moderate risk. High risk on 9% of days. Onshore wind on 3% of days. Official warnings: 0.
  8. August: Usually moderate risk. High risk on 8% of days. Onshore wind on 1% of days. Official warnings: 0.
  9. September: Usually moderate risk. High risk on 12% of days. Onshore wind on 5% of days. Official warnings: 0.
  10. October: Usually moderate risk. High risk on 0% of days. Onshore wind on 28% of days. Official warnings: 0.
  11. November: Usually moderate risk. High risk on 0% of days. Onshore wind on 75% of days. Official warnings: 0. Eyewitness reports: 1.
  12. December: Usually low risk. High risk on 0% of days. Onshore wind on 98% 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: 8.0671, 98.5932

Questions and answers

Can I swim at Laem Had Beach (Koh Yao Yai) 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 Laem Had Beach (Koh Yao 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 Laem Had Beach (Koh Yao Yai)?

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