Jellyfish in Koh Samui in March
March in Koh Samui is a month of moderate risk. The prevailing south-east wind of about 2.9 m/s is blowing along the shore; mean waves 0.38 m, water 29.7 °C. Based on 2022–2026 weather the model rates about 32% of days in this month as high risk. Official DMCR jellyfish warnings in March: 1.
Weather and sea in March
| Wind | 2.9 m/s, south-east |
|---|---|
| Onshore wind | 0.2 m/s |
| Waves | 0.38 m |
| Water | 29.7 °C |
| Rain | 45 mm · 11.2 days |
Beaches this month
| Beaches | Typical risk | Onshore wind | DMCR |
|---|---|---|---|
| Lipa Noi Beach | Moderate | -2.3 | 0 |
| Taling Ngam Beach | Moderate | -1.6 | 0 |
| Bang Po Beach | Moderate | -1.5 | 0 |
| Bophut Beach | Moderate | -0.5 | 1 |
| Chaweng Beach | Moderate | 2.5 | 1 |
| Chaweng Noi Beach | Moderate | 2.3 | 1 |
| Choeng Mon Beach | Moderate | -0.6 | 1 |
| Lamai Beach | Moderate | 2.3 | 1 |
| Maenam Beach | Moderate | -0.4 | 1 |
| Silver Beach (Thong Takian) | Moderate | 2.2 | 1 |
Official cases in March
- DMCRSilver Beach (Thong Takian) · หาดหน้าโรงแรมบันยันทรี เกาะสมุย จ.สุราษฎร์ธานี
Jellyfish found here
Koh Samui: jellyfish month by month
- January: Usually low risk. High risk on 0% of days. Onshore wind on 67% of days. Official warnings: 0. Eyewitness reports: 20.
- February: Usually moderate risk. High risk on 15% of days. Onshore wind on 50% of days. Official warnings: 0. Eyewitness reports: 29.
- March: Usually moderate risk. High risk on 32% of days. Onshore wind on 45% of days. Official warnings: 1. Eyewitness reports: 47.
- April: Usually moderate risk. High risk on 20% of days. Onshore wind on 44% of days. Official warnings: 0. Eyewitness reports: 27.
- May: Usually moderate risk. High risk on 2% of days. Onshore wind on 34% of days. Official warnings: 0. Eyewitness reports: 25.
- June: Usually low risk. High risk on 0% of days. Onshore wind on 23% of days. Official warnings: 0. Eyewitness reports: 25.
- July: Usually moderate risk. High risk on 1% of days. Onshore wind on 23% of days. Official warnings: 2. Eyewitness reports: 84.
- August: Usually moderate risk. High risk on 35% of days. Onshore wind on 23% of days. Official warnings: 0. Eyewitness reports: 111.
- September: Usually moderate risk. High risk on 4% of days. Onshore wind on 26% of days. Official warnings: 0. Eyewitness reports: 77.
- October: Usually moderate risk. High risk on 1% of days. Onshore wind on 53% of days. Official warnings: 0. Eyewitness reports: 73.
- November: Usually moderate risk. High risk on 2% of days. Onshore wind on 68% of days. Official warnings: 0. Eyewitness reports: 18.
- December: Usually low risk. High risk on 0% of days. Onshore wind on 76% of days. Official warnings: 0. Eyewitness reports: 18.
- 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 Koh Samui in March?
March in Koh Samui is a month of moderate risk. The prevailing south-east wind of about 2.9 m/s is blowing along the shore; mean waves 0.38 m, water 29.7 °C. Based on 2022–2026 weather the model rates about 32% of days in this month as high risk. Official DMCR jellyfish warnings in March: 1.
Where in Koh Samui is the jellyfish risk lowest in March?
Based on this month’s weather the risk is lowest at: Lipa Noi Beach, Taling Ngam Beach, Bang Po Beach.
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.




