Jellyfish in Koh Samet in December
December in Koh Samet is usually a calm month. The prevailing north-east wind of about 3.5 m/s is blowing offshore; mean waves 0.26 m, water 28.4 °C. Based on 2022–2026 weather the model rates about 0% of days in this month as high risk. Official DMCR jellyfish warnings in December: 0.
Weather and sea in December
| Wind | 3.5 m/s, north-east |
|---|---|
| Onshore wind | -0.7 m/s |
| Waves | 0.26 m |
| Water | 28.4 °C |
| Rain | 15 mm · 2.9 days |
Beaches this month
| Beaches | Typical risk | Onshore wind | DMCR |
|---|---|---|---|
| Ao Prao | Low | -1.8 | 0 |
| Ao Cho | Low | 0.5 | 0 |
| Ao Hin Khok | Low | -1.4 | 0 |
| Ao Phai | Low | -0.3 | 0 |
| Ao Thian (Candlelight Beach) | Low | -0.2 | 0 |
| Ao Wong Duan | Low | -0.2 | 0 |
| Sai Kaew Beach (Koh Samet) | Low | -1.5 | 0 |
Official cases in December
No official warnings nearby in this month.
Jellyfish found here
Koh Samet: jellyfish month by month
- January: Usually moderate risk. High risk on 0% of days. Onshore wind on 51% of days. Official warnings: 0. Eyewitness reports: 1.
- February: Usually moderate risk. High risk on 10% of days. Onshore wind on 66% of days. Official warnings: 0. Eyewitness reports: 2.
- March: Usually moderate risk. High risk on 12% of days. Onshore wind on 88% of days. Official warnings: 0. Eyewitness reports: 3.
- April: Usually low risk. High risk on 0% of days. Onshore wind on 94% of days. Official warnings: 0. Eyewitness reports: 1.
- May: Usually moderate risk. High risk on 0% of days. Onshore wind on 77% of days. Official warnings: 0.
- June: Usually moderate risk. High risk on 4% of days. Onshore wind on 51% of days. Official warnings: 0. Eyewitness reports: 5.
- July: Usually moderate risk. High risk on 30% of days. Onshore wind on 44% of days. Official warnings: 0.
- August: Usually moderate risk. High risk on 35% of days. Onshore wind on 50% of days. Official warnings: 0.
- September: Usually moderate risk. High risk on 13% of days. Onshore wind on 45% of days. Official warnings: 0. Eyewitness reports: 2.
- October: Usually moderate risk. High risk on 10% of days. Onshore wind on 43% of days. Official warnings: 0. Eyewitness reports: 1.
- November: Usually low risk. High risk on 0% of days. Onshore wind on 37% of days. Official warnings: 0. Eyewitness reports: 2.
- December: Usually low risk. High risk on 0% of days. Onshore wind on 28% of days. Official warnings: 0. Eyewitness reports: 1.
- 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 Samet in December?
December in Koh Samet is usually a calm month. The prevailing north-east wind of about 3.5 m/s is blowing offshore; mean waves 0.26 m, water 28.4 °C. Based on 2022–2026 weather the model rates about 0% of days in this month as high risk. Official DMCR jellyfish warnings in December: 0.
Where in Koh Samet is the jellyfish risk lowest in December?
Based on this month’s weather the risk is lowest at: Ao Prao, Ao Cho, Ao Hin Khok.
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.




