Jellyfish in Koh Rok in May
May in Koh Rok is a month of moderate risk. The prevailing west wind of about 4 m/s is blowing offshore; mean waves 0.63 m, water 31.2 °C. Based on 2022–2026 weather the model rates about 8% of days in this month as high risk. Official DMCR jellyfish warnings in May: 0.
Weather and sea in May
| Wind | 4 m/s, west |
|---|---|
| Onshore wind | -2.2 m/s |
| Waves | 0.63 m |
| Water | 31.2 °C |
| Rain | 291 mm · 26 days |
Beaches this month
| Beaches | Typical risk | Onshore wind | DMCR |
|---|---|---|---|
| Koh Rok | Moderate | -2.2 | 0 |
Official cases in May
No official warnings nearby in this month.
Jellyfish found here
Koh Rok: jellyfish month by month
- 0%Jan3January: Usually moderate risk. High risk on 0% of days. Onshore wind on 95% of days. Official warnings: 0. Eyewitness reports: 3.
- 0%FebFebruary: Usually moderate risk. High risk on 0% of days. Onshore wind on 82% of days. Official warnings: 0.
- 3%MarMarch: Usually moderate risk. High risk on 3% of days. Onshore wind on 78% of days. Official warnings: 0.
- 17%Apr1April: Usually moderate risk. High risk on 17% of days. Onshore wind on 38% of days. Official warnings: 0. Eyewitness reports: 1.
- 8%MayMay: Usually moderate risk. High risk on 8% of days. Onshore wind on 32% of days. Official warnings: 0.
- 6%JunJune: Usually moderate risk. High risk on 6% of days. Onshore wind on 7% of days. Official warnings: 0.
- 2%JulJuly: Usually moderate risk. High risk on 2% of days. Onshore wind on 5% of days. Official warnings: 0.
- 3%AugAugust: Usually moderate risk. High risk on 3% of days. Onshore wind on 3% of days. Official warnings: 0.
- 4%SepSeptember: Usually moderate risk. High risk on 4% of days. Onshore wind on 3% of days. Official warnings: 0.
- 2%OctOctober: Usually moderate risk. High risk on 2% of days. Onshore wind on 24% of days. Official warnings: 0.
- 3%NovNovember: Usually moderate risk. High risk on 3% of days. Onshore wind on 67% of days. Official warnings: 0.
- 0%DecDecember: Usually low risk. High risk on 0% of days. Onshore wind on 95% 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 Rok in May?
May in Koh Rok is a month of moderate risk. The prevailing west wind of about 4 m/s is blowing offshore; mean waves 0.63 m, water 31.2 °C. Based on 2022–2026 weather the model rates about 8% of days in this month as high risk. Official DMCR jellyfish warnings in May: 0.
Where in Koh Rok is the jellyfish risk lowest in May?
Based on this month’s weather the risk is lowest at: Koh Rok.
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.




