Jellyfish in the Gulf of Thailand in July
July in the Gulf of Thailand is a month of moderate risk. The prevailing wind of about 3.9 m/s is blowing along the shore; mean waves 0.45 m, water 30.3 °C. Based on 2022–2026 weather the model rates about 25% of days in this month as high risk. Official DMCR jellyfish warnings in July: 4.
| Wind | 3.9 m/s |
|---|---|
| Onshore wind | 0.23 m/s |
| Waves | 0.45 m |
| Water | 30.3 °C |
| Rain | 282.5 mm · 23.7 days |
Areas this month
- PattayaHigh56% days with high risk
- Trat coastModerate47% days with high risk
- Koh ChangModerate42% days with high risk
- Koh KoodModerate46% days with high risk
- Koh MakModerate44% days with high risk
- Koh WaiModerate39% days with high risk
- Ang Thong Marine ParkModerate6% days with high risk
- Bang SaenModerate17% days with high risk
- Cha-amModerate18% days with high risk
- ChanthaburiModerate34% days with high risk
- Hua Hin & PranburiModerate20% days with high risk
- Koh LarnModerate22% days with high risk
- Koh PhanganModerate15% days with high risk
- Koh SametModerate30% days with high risk
- Koh Si ChangModerate15% days with high risk
- PattaniModerate14% days with high risk
- Prachuap Khiri KhanModerate26% days with high risk
- RayongModerate29% days with high risk
- Surat Thani coastModerate17% days with high risk
- ChumphonModerate12% days with high risk
- Khanom & SichonModerate28% days with high risk
- Koh TaoModerate17% days with high risk
- NarathiwatModerate22% days with high risk
- SongkhlaModerate11% days with high risk
- Koh SamuiModerate1% days with high risk
Official cases in July
- DMCRBang Hoi Beach · หาดบางหอย อ.สิงหนคร จ.สงขลา
- DMCRChao Lao Beach · หาดเจ้าหลาว จ.จันทบุรี
- DMCRHaad Rin (Sunrise Beach) · เกาะพะงัน จ.สุราษฎร์ธานี
- DMCRLamai Beach · เกาะสมุย จ.สุราษฎร์ธานี
Gulf of Thailand: jellyfish month by month
- 0%Jan576January: Usually moderate risk. High risk on 0% of days. Onshore wind on 56% of days. Official warnings: 5. Eyewitness reports: 76.
- 8%Feb399+February: Usually moderate risk. High risk on 8% of days. Onshore wind on 60% of days. Official warnings: 3. Eyewitness reports: 217.
- 13%Mar199+March: Usually moderate risk. High risk on 13% of days. Onshore wind on 61% of days. Official warnings: 1. Eyewitness reports: 157.
- 2%Apr179April: Usually moderate risk. High risk on 2% of days. Onshore wind on 59% of days. Official warnings: 1. Eyewitness reports: 79.
- 0%May53May: Usually moderate risk. High risk on 0% of days. Onshore wind on 51% of days. Official warnings: 0. Eyewitness reports: 53.
- 9%Jun99+June: Usually moderate risk. High risk on 9% of days. Onshore wind on 50% of days. Official warnings: 0. Eyewitness reports: 171.
- 25%Jul499+July: Usually moderate risk. High risk on 25% of days. Onshore wind on 49% of days. Official warnings: 4. Eyewitness reports: 226.
- 23%Aug199+August: Usually moderate risk. High risk on 23% of days. Onshore wind on 49% of days. Official warnings: 1. Eyewitness reports: 317.
- 11%Sep99+September: Usually moderate risk. High risk on 11% of days. Onshore wind on 47% of days. Official warnings: 0. Eyewitness reports: 215.
- 13%Oct99+October: Usually moderate risk. High risk on 13% of days. Onshore wind on 41% of days. Official warnings: 0. Eyewitness reports: 273.
- 2%Nov99+November: Usually moderate risk. High risk on 2% of days. Onshore wind on 44% of days. Official warnings: 0. Eyewitness reports: 101.
- 1%Dec66December: Usually low risk. High risk on 1% of days. Onshore wind on 49% of days. Official warnings: 0. Eyewitness reports: 66.
- typical level that month
- bar and % — share of high-risk days
- nofficial warnings, all years
- neyewitness reports, all years
Questions and answers
Are there jellyfish in the Gulf of Thailand in July?
Based on 2022–2026 weather, in July the risk in the Gulf of Thailand was high on 25% of days and the wind blew from the sea on 49% of days. Official DMCR warnings in this month over all years: 4. It is an estimate, not a guarantee: "no reports" does not mean there are no jellyfish. Check beach flags and follow lifeguards.
When is jellyfish season in the Gulf of Thailand?
The risk is most often elevated in July, August, September.
What should I do if a jellyfish stings me 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.




