Jellyfish at Ao Manao (Prachuap)

อ่าวมะนาว · Prachuap Khiri Khan · Gulf of Thailand

Risk today · 24 Oct 2026Moderate

Main factor: Jellyfish season in this area

Conditions or reports nearby make an encounter more likely.

Today the jellyfish risk at Ao Manao (Prachuap) Beach is moderate. Main factor: jellyfish season in this area. 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. TodayModerate4 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.0.1 m — Waves: up to 0.1 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.6 mm — Rain: 6 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  2. TomorrowModerate3 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.0.1 m — Waves: up to 0.1 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.
  3. Mon 26Moderate5 m/s NE — Wind: up to 5 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.9 mm — Rain: 9 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  4. Tue 27High5 m/s NE — Wind: up to 5 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.8 mm — Rain: 8 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  5. Wed 28Moderate5 m/s N — Wind: up to 5 m/s, blowing from N. 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.0 mm — Rain: 0 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
  6. Thu 29Moderate4 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.0.4 m — Waves: up to 0.4 m during the day. Strong onshore waves wash jellyfish ashore; box jellyfish prefer calm water.11 mm — Rain: 11 mm in the day. Box jellyfish are more common near river mouths after heavy rain.

Why this level

  • 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 · stronger wind than usual · onshore wind
  • Box jellyfish Lowusual background
    calm water and rain, usual for the season

October is an average month for jellyfish on the western Gulf coast, the wind blows from the sea (~-2.3 m/s), the sea is calm (waves ~0.1 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 Manao (Prachuap): jellyfish month by month

  1. 0%JanJanuary: Usually moderate risk. High risk on 0% of days. Onshore wind on 46% of days. Official warnings: 0.
  2. 6%FebFebruary: Usually moderate risk. High risk on 6% of days. Onshore wind on 78% of days. Official warnings: 0.
  3. 14%MarMarch: Usually moderate risk. High risk on 14% of days. Onshore wind on 86% of days. Official warnings: 0.
  4. 0%Apr2April: Usually low risk. High risk on 0% of days. Onshore wind on 70% of days. Official warnings: 0. Eyewitness reports: 2.
  5. 0%MayMay: Usually moderate risk. High risk on 0% of days. Onshore wind on 39% of days. Official warnings: 0.
  6. 0%Jun1June: Usually moderate risk. High risk on 0% of days. Onshore wind on 3% of days. Official warnings: 0. Eyewitness reports: 1.
  7. 28%JulJuly: Usually moderate risk. High risk on 28% of days. Onshore wind on 3% of days. Official warnings: 0.
  8. 26%AugAugust: Usually moderate risk. High risk on 26% of days. Onshore wind on 1% of days. Official warnings: 0.
  9. 4%SepSeptember: Usually moderate risk. High risk on 4% of days. Onshore wind on 4% of days. Official warnings: 0.
  10. 12%Oct2October: Usually moderate risk. High risk on 12% of days. Onshore wind on 12% of days. Official warnings: 0. Eyewitness reports: 2.
  11. 0%Nov1November: Usually moderate risk. High risk on 0% of days. Onshore wind on 3% of days. Official warnings: 0. Eyewitness reports: 1.
  12. 0%DecDecember: Usually low risk. High risk on 0% of days. Onshore wind on 10% 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: 11.7780, 99.8003

Questions and answers

Can I swim at Ao Manao (Prachuap) today?

Today's estimated risk is moderate; main factor: jellyfish season in this area. 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 Manao (Prachuap) 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 Manao (Prachuap)?

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.