Jellyfish at Long Beach (Hat Sai Yao, Koh Chang) Beach in December
December at Long Beach (Hat Sai Yao, Koh Chang) Beach is usually a calm month. The prevailing north wind of about 3.6 m/s is blowing offshore; mean waves 0.29 m, water 29.1 °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.
5-day outlook at Long Beach (Hat Sai Yao, Koh Chang) Beach →
Weather and sea in December
| Wind | 3.6 m/s, north |
|---|---|
| Onshore wind | -1.9 m/s |
| Waves | 0.29 m |
| Water | 29.1 °C |
| Rain | 21 mm · 4.3 days |
Official cases nearby in December
No official warnings nearby in this month.
Nearby beaches this month
Jellyfish found here
Long Beach (Hat Sai Yao, Koh Chang): jellyfish month by month
- 0%JanJanuary: Usually moderate risk. High risk on 0% of days. Onshore wind on 39% of days. Official warnings: 0.
- 4%FebFebruary: Usually moderate risk. High risk on 4% of days. Onshore wind on 75% of days. Official warnings: 0.
- 8%MarMarch: Usually moderate risk. High risk on 8% of days. Onshore wind on 88% of days. Official warnings: 0.
- 0%AprApril: Usually low risk. High risk on 0% of days. Onshore wind on 88% of days. Official warnings: 0.
- 0%MayMay: Usually moderate risk. High risk on 0% of days. Onshore wind on 80% of days. Official warnings: 0.
- 27%JunJune: Usually moderate risk. High risk on 27% of days. Onshore wind on 100% of days. Official warnings: 0.
- 41%JulJuly: Usually moderate risk. High risk on 41% of days. Onshore wind on 98% of days. Official warnings: 0.
- 48%AugAugust: Usually moderate risk. High risk on 48% of days. Onshore wind on 99% of days. Official warnings: 0.
- 25%SepSeptember: Usually moderate risk. High risk on 25% of days. Onshore wind on 91% of days. Official warnings: 0.
- 23%OctOctober: Usually moderate risk. High risk on 23% of days. Onshore wind on 33% of days. Official warnings: 0.
- 0%NovNovember: Usually moderate risk. High risk on 0% of days. Onshore wind on 8% of days. Official warnings: 0.
- 0%DecDecember: Usually low risk. High risk on 0% of days. Onshore wind on 8% of days. Official warnings: 0.
- typical level that month
- bar and % — share of high-risk days
- nofficial warnings, all years
Questions and answers
Are there jellyfish at Long Beach (Hat Sai Yao, Koh Chang) Beach in December?
December at Long Beach (Hat Sai Yao, Koh Chang) Beach is usually a calm month. The prevailing north wind of about 3.6 m/s is blowing offshore; mean waves 0.29 m, water 29.1 °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.
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.




