Jellyfish at Ton Sai Bay Beach in December

December at Ton Sai Bay Beach is usually a calm month. The prevailing north-east wind of about 4.9 m/s is blowing offshore; mean waves 0.35 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.

Typical risk this monthLow
  • Low 56%
  • Moderate 44%
  • High 0%
  • Very high 0%

How the days of this month split by risk level (2022–2026 weather). A typical day is low; 0% of days are high or very high.

5-day outlook at Ton Sai Bay Beach →

Weather and sea in December

Wind4.9 m/s, north-east
Onshore wind-1.3 m/s
Waves0.35 m
Water29.1 °C
Rain109 mm · 14.3 days

Official cases nearby in December

No official warnings nearby in this month.

Nearby beaches 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.

Ton Sai Bay: jellyfish month by month

  1. January: Usually moderate risk. High risk on 0% of days. Onshore wind on 28% of days. Official warnings: 0.
  2. February: Usually moderate risk. High risk on 0% of days. Onshore wind on 52% of days. Official warnings: 0. Eyewitness reports: 1.
  3. March: Usually moderate risk. High risk on 1% of days. Onshore wind on 54% of days. Official warnings: 0.
  4. April: Usually moderate risk. High risk on 14% of days. Onshore wind on 39% of days. Official warnings: 0.
  5. May: Usually moderate risk. High risk on 11% of days. Onshore wind on 35% of days. Official warnings: 0.
  6. June: Usually moderate risk. High risk on 8% of days. Onshore wind on 32% of days. Official warnings: 0.
  7. July: Usually moderate risk. High risk on 2% of days. Onshore wind on 28% of days. Official warnings: 0.
  8. August: Usually moderate risk. High risk on 2% of days. Onshore wind on 30% of days. Official warnings: 0.
  9. September: Usually moderate risk. High risk on 0% of days. Onshore wind on 19% of days. Official warnings: 0.
  10. October: Usually moderate risk. High risk on 0% of days. Onshore wind on 14% of days. Official warnings: 0.
  11. November: Usually moderate risk. High risk on 0% of days. Onshore wind on 6% of days. Official warnings: 0. Eyewitness reports: 1.
  12. December: Usually low risk. High risk on 0% of days. Onshore wind on 3% of days. Official warnings: 0.
  • 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.

Jellyfish in Koh Phi Phi in December →

Questions and answers

Are there jellyfish at Ton Sai Bay Beach in December?

December at Ton Sai Bay Beach is usually a calm month. The prevailing north-east wind of about 4.9 m/s is blowing offshore; mean waves 0.35 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.