Jellyfish in Koh Yao in December
December in Koh Yao is usually a calm month. The prevailing north-east wind of about 4.2 m/s is blowing offshore; mean waves 0.2 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.
Weather and sea in December
| Wind | 4.2 m/s, north-east |
|---|---|
| Onshore wind | -0.7 m/s |
| Waves | 0.2 m |
| Water | 29.1 °C |
| Rain | 112 mm · 17.7 days |
Beaches this month
| Beaches | Typical risk | Onshore wind | DMCR |
|---|---|---|---|
| Ao Klong Son (Koh Yao Yai) | Low | -2.2 | 0 |
| Laem Had Beach (Koh Yao Yai) | Low | 2.3 | 0 |
| Loh Ha Beach (Koh Yao Yai) | Low | 0.7 | 0 |
| Loh Pared Beach (Koh Yao Yai) | Low | -3.4 | 0 |
Official cases in December
No official warnings nearby in this month.
Jellyfish found here
This is the dry-season jellyfish period: large rhizostome jellyfish, lilac medusae and stinging plankton. Bluebottles are rare on the Andaman coast at this time.
Koh Yao: jellyfish month by month
- 0%Jan2January: Usually moderate risk. High risk on 0% of days. Onshore wind on 43% of days. Official warnings: 0. Eyewitness reports: 2.
- 0%FebFebruary: Usually moderate risk. High risk on 0% of days. Onshore wind on 43% of days. Official warnings: 0.
- 1%MarMarch: Usually moderate risk. High risk on 1% of days. Onshore wind on 44% of days. Official warnings: 0.
- 12%Apr3April: Usually moderate risk. High risk on 12% of days. Onshore wind on 40% of days. Official warnings: 0. Eyewitness reports: 3.
- 10%MayMay: Usually moderate risk. High risk on 10% of days. Onshore wind on 43% of days. Official warnings: 0.
- 13%Jun1June: Usually moderate risk. High risk on 13% of days. Onshore wind on 40% of days. Official warnings: 0. Eyewitness reports: 1.
- 6%JulJuly: Usually moderate risk. High risk on 6% of days. Onshore wind on 43% of days. Official warnings: 0.
- 6%AugAugust: Usually moderate risk. High risk on 6% of days. Onshore wind on 40% of days. Official warnings: 0.
- 9%SepSeptember: Usually moderate risk. High risk on 9% of days. Onshore wind on 37% of days. Official warnings: 0.
- 0%OctOctober: Usually moderate risk. High risk on 0% of days. Onshore wind on 35% of days. Official warnings: 0.
- 0%Nov1November: Usually low risk. High risk on 0% of days. Onshore wind on 40% of days. Official warnings: 0. Eyewitness reports: 1.
- 0%DecDecember: Usually low risk. High risk on 0% of days. Onshore wind on 46% of days. Official warnings: 0.
- 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 Koh Yao in December?
December in Koh Yao is usually a calm month. The prevailing north-east wind of about 4.2 m/s is blowing offshore; mean waves 0.2 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.
Where in Koh Yao is the jellyfish risk lowest in December?
Based on this month’s weather the risk is lowest at: Ao Klong Son (Koh Yao Yai), Laem Had Beach (Koh Yao Yai), Loh Ha Beach (Koh Yao Yai).
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.