Jellyfish in the Andaman Sea in July
July in the Andaman Sea is a month of moderate risk. The prevailing wind of about 4 m/s is blowing from the sea onto the beach; mean waves 0.79 m, water 30.1 °C. Based on 2022–2026 weather the model rates about 6% of days in this month as high risk. Official DMCR jellyfish warnings in July: 2.
| Wind | 4 m/s |
|---|---|
| Onshore wind | 1.5 m/s |
| Waves | 0.79 m |
| Water | 30.1 °C |
| Rain | 226.9 mm · 22.5 days |
Areas this month
- PhuketModerate16% days with high risk
- Koh YaoModerate6% days with high risk
- Satun (Tarutao, Pak Bara)Moderate3% days with high risk
- TrangModerate2% days with high risk
- Koh Chang (Ranong)Moderate2% days with high risk
- Koh LantaModerate0% days with high risk
- Koh LipeModerate2% days with high risk
- Koh PhayamModerate4% days with high risk
- Koh Phi PhiModerate2% days with high risk
- Koh RokModerate2% days with high risk
- Similan IslandsModerate1% days with high risk
- Surin IslandsModerate6% days with high risk
- Khao LakModerate0% days with high risk
- Krabi (Ao Nang)Low0% days with high risk
Official cases in July
- DMCRKata Beach · หาดกะตะ หาดกะรน จ.ภูเก็ต
- DMCRKaron Beach · หาดกะรน อ.เมือง จ.ภูเก็ต
Andaman Sea: jellyfish month by month
- January: Usually moderate risk. High risk on 3% of days. Onshore wind on 25% of days. Official warnings: 0. Eyewitness reports: 461.
- February: Usually moderate risk. High risk on 5% of days. Onshore wind on 29% of days. Official warnings: 4. Eyewitness reports: 360.
- March: Usually moderate risk. High risk on 3% of days. Onshore wind on 35% of days. Official warnings: 4. Eyewitness reports: 485.
- April: Usually moderate risk. High risk on 21% of days. Onshore wind on 55% of days. Official warnings: 1. Eyewitness reports: 361.
- May: Usually moderate risk. High risk on 26% of days. Onshore wind on 62% of days. Official warnings: 4. Eyewitness reports: 136.
- June: Usually moderate risk. High risk on 14% of days. Onshore wind on 75% of days. Official warnings: 7. Eyewitness reports: 263.
- July: Usually moderate risk. High risk on 6% of days. Onshore wind on 76% of days. Official warnings: 2. Eyewitness reports: 111.
- August: Usually moderate risk. High risk on 9% of days. Onshore wind on 77% of days. Official warnings: 1. Eyewitness reports: 77.
- September: Usually moderate risk. High risk on 6% of days. Onshore wind on 76% of days. Official warnings: 3. Eyewitness reports: 189.
- October: Usually moderate risk. High risk on 2% of days. Onshore wind on 57% of days. Official warnings: 0. Eyewitness reports: 121.
- November: Usually moderate risk. High risk on 0% of days. Onshore wind on 36% of days. Official warnings: 0. Eyewitness reports: 84.
- December: Usually low risk. High risk on 1% of days. Onshore wind on 25% of days. Official warnings: 1. Eyewitness reports: 175.
- 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 in the Andaman Sea in July?
Based on 2022–2026 weather, in July the risk in the Andaman Sea was high on 6% of days and the wind blew from the sea on 76% of days. Official DMCR warnings in this month over all years: 2. 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 Andaman Sea?
The risk is most often elevated in March, April, May.
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.




