Jellyfish at Bang Po Beach
หาดบางปอ · Koh Samui · Gulf of Thailand
Main factor: Stronger wind than usual
Conditions or reports nearby make an encounter more likely.
Today the jellyfish risk at Bang Po Beach is moderate. 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
- Other jellyfish and stinging planktonModerate
- Bluebottles (Portuguese man o’ war)Moderate
5-day outlook
- TodayModerate4 m/s W — Wind: up to 4 m/s, blowing from W. 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.3 mm — Rain: 3 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
- TomorrowModerate3 m/s SW — Wind: up to 3 m/s, blowing from SW. 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.14 mm — Rain: 14 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
- Mon 26Low5 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.0.3 m — Waves: up to 0.3 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.
- 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.37 mm — Rain: 37 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
- Wed 28Low3 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.8 mm — Rain: 8 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
- Thu 29Low3 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.21 mm — Rain: 21 mm in the day. Box jellyfish are more common near river mouths after heavy rain.
Why this level
Total: Moderate Other jellyfish and stinging plankton
- Other jellyfish and stinging plankton Moderateraises riskabove usual for the season · stronger wind than usual · waves toward the shore
- Bluebottles (Portuguese man o’ war) Moderateraises riskabove usual for the season · steady onshore wind for 3 days · stronger wind than usual
- Box jellyfish Lowusual backgroundcalm water and rain, usual for the season
October is an average month for jellyfish on the Samui archipelago, the wind blows from the sea (~1.1 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 ~0.1 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.
Seasonality
Bang Po: jellyfish month by month
- 0%Jan2January: Usually low risk. High risk on 0% of days. Onshore wind on 48% of days. Official warnings: 0. Eyewitness reports: 2.
- 23%Feb1February: Usually moderate risk. High risk on 23% of days. Onshore wind on 9% of days. Official warnings: 0. Eyewitness reports: 1.
- 28%MarMarch: Usually moderate risk. High risk on 28% of days. Onshore wind on 6% of days. Official warnings: 0.
- 25%Apr1April: Usually moderate risk. High risk on 25% of days. Onshore wind on 15% of days. Official warnings: 0. Eyewitness reports: 1.
- 0%MayMay: Usually moderate risk. High risk on 0% of days. Onshore wind on 14% of days. Official warnings: 0.
- 0%Jun1June: Usually moderate risk. High risk on 0% of days. Onshore wind on 21% of days. Official warnings: 0. Eyewitness reports: 1.
- 0%Jul3July: Usually moderate risk. High risk on 0% of days. Onshore wind on 12% of days. Official warnings: 0. Eyewitness reports: 3.
- 32%AugAugust: Usually moderate risk. High risk on 32% of days. Onshore wind on 16% of days. Official warnings: 0.
- 1%SepSeptember: Usually moderate risk. High risk on 1% of days. Onshore wind on 28% of days. Official warnings: 0.
- 0%Oct2October: Usually moderate risk. High risk on 0% of days. Onshore wind on 71% of days. Official warnings: 0. Eyewitness reports: 2.
- 1%Nov1November: Usually moderate risk. High risk on 1% of days. Onshore wind on 71% of days. Official warnings: 0. Eyewitness reports: 1.
- 0%DecDecember: Usually low risk. High risk on 0% of days. Onshore wind on 80% 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: 9.5799, 99.9520
Questions and answers
Can I swim at Bang Po Beach today?
Today's estimated risk is moderate; 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 Bang Po 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 Bang Po Beach?
Based on 2022–2026 weather, the risk is most often elevated in February, March, August. 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.