Jellyfish at Patok Bay (Koh Racha Yai) Beach in September
September at Patok Bay (Koh Racha Yai) Beach is a month of moderate risk. The prevailing west wind of about 5.7 m/s is blowing from the sea onto the beach; mean waves 1.1 m, water 29.4 °C. Based on 2022–2026 weather the model rates about 8% of days in this month as high risk. Official DMCR jellyfish warnings in September: 1.
5-day outlook at Patok Bay (Koh Racha Yai) Beach →
Weather and sea in September
| Wind | 5.7 m/s, west |
|---|---|
| Onshore wind | 4.6 m/s |
| Waves | 1.1 m |
| Water | 29.4 °C |
| Rain | 247 mm · 21.8 days |
Official cases nearby in September
- DMCRAo La / Ao Thue (Koh Racha Yai) · อ่าวปะตก เกาะราชาใหญ่ จ.ภูเก็ต
Nearby beaches this month
- Ao Yon BeachModerate
- Koh AeoModerate
- Long Beach (Coral Island / Koh Hey)Moderate
- Siam Bay (Koh Racha Yai)Moderate
- Tri Trang BeachModerate
- Ao La / Ao Thue (Koh Racha Yai)Moderate
Jellyfish found here
Patok Bay (Koh Racha Yai): jellyfish month by month
- January: Usually moderate risk. High risk on 16% of days. Onshore wind on 7% of days. Official warnings: 0. Eyewitness reports: 1.
- February: Usually moderate risk. High risk on 31% of days. Onshore wind on 14% of days. Official warnings: 0.
- March: Usually moderate risk. High risk on 4% of days. Onshore wind on 21% of days. Official warnings: 1. Eyewitness reports: 1.
- April: Usually moderate risk. High risk on 9% of days. Onshore wind on 65% of days. Official warnings: 0. Eyewitness reports: 1.
- May: Usually moderate risk. High risk on 41% of days. Onshore wind on 72% of days. Official warnings: 1.
- June: Usually moderate risk. High risk on 33% of days. Onshore wind on 93% of days. Official warnings: 1. Eyewitness reports: 1.
- July: Usually moderate risk. High risk on 23% of days. Onshore wind on 94% of days. Official warnings: 0. Eyewitness reports: 1.
- August: Usually moderate risk. High risk on 29% of days. Onshore wind on 95% of days. Official warnings: 0.
- September: Usually moderate risk. High risk on 8% of days. Onshore wind on 95% of days. Official warnings: 1. Eyewitness reports: 4.
- October: Usually moderate risk. High risk on 5% of days. Onshore wind on 80% of days. Official warnings: 0.
- November: Usually moderate risk. High risk on 1% of days. Onshore wind on 32% of days. Official warnings: 0.
- December: Usually moderate risk. High risk on 10% of days. Onshore wind on 9% 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.
Questions and answers
Are there jellyfish at Patok Bay (Koh Racha Yai) Beach in September?
September at Patok Bay (Koh Racha Yai) Beach is a month of moderate risk. The prevailing west wind of about 5.7 m/s is blowing from the sea onto the beach; mean waves 1.1 m, water 29.4 °C. Based on 2022–2026 weather the model rates about 8% of days in this month as high risk. Official DMCR jellyfish warnings in September: 1.
What to do if a jellyfish stings you in Thailand?
Get out of the water. Call 1669 for trouble breathing, chest pain or collapse. Do not rub the sting and do not rinse it with fresh water. If a box jellyfish is possible, pour vinegar over the sting for at least 30 seconds.




