Jellyfish in Koh Samui in July

July in Koh Samui is a month of moderate risk. The prevailing west wind of about 3.7 m/s is blowing offshore; mean waves 0.32 m, water 30.7 °C. Based on 2022–2026 weather the model rates about 1% of days in this month as high risk. Official DMCR jellyfish warnings in July: 2.

Typical risk this monthModerate
  • Low 0%
  • Moderate 99%
  • High 1%
  • Very high 0%

How the days of this month split by risk level (2022–2026 weather). A typical day is moderate; 1% of days are high or very high.

Risk in Koh Samui today →

Weather and sea in July

Wind3.7 m/s, west
Onshore wind-1.2 m/s
Waves0.32 m
Water30.7 °C
Rain119 mm · 20.2 days

Beaches this month

BeachesTypical riskOnshore windDMCR
Lamai BeachModerate-1.21
Taling Ngam BeachModerate3.61
Bang Po BeachModerate-0.70
Bophut BeachModerate-22
Chaweng BeachModerate-2.21
Chaweng Noi BeachModerate-3.11
Choeng Mon BeachModerate-1.92
Lipa Noi BeachModerate1.11
Maenam BeachModerate-2.12
Silver Beach (Thong Takian)Moderate-3.21

Official cases in July

  1. DMCR
    Lamai Beach · เกาะสมุย จ.สุราษฎร์ธานี
    bluebottle (Portuguese man o’ war), box jellyfish, other
  2. DMCR
    Haad Rin (Sunrise Beach) · เกาะพะงัน จ.สุราษฎร์ธานี
    bluebottle (Portuguese man o’ war), box jellyfish, other

Jellyfish found here

Koh Samui: jellyfish month by month

  1. January: Usually low risk. High risk on 0% of days. Onshore wind on 67% of days. Official warnings: 0. Eyewitness reports: 20.
  2. February: Usually moderate risk. High risk on 15% of days. Onshore wind on 50% of days. Official warnings: 0. Eyewitness reports: 29.
  3. March: Usually moderate risk. High risk on 32% of days. Onshore wind on 45% of days. Official warnings: 1. Eyewitness reports: 47.
  4. April: Usually moderate risk. High risk on 20% of days. Onshore wind on 44% of days. Official warnings: 0. Eyewitness reports: 27.
  5. May: Usually moderate risk. High risk on 2% of days. Onshore wind on 34% of days. Official warnings: 0. Eyewitness reports: 25.
  6. June: Usually low risk. High risk on 0% of days. Onshore wind on 23% of days. Official warnings: 0. Eyewitness reports: 25.
  7. July: Usually moderate risk. High risk on 1% of days. Onshore wind on 23% of days. Official warnings: 2. Eyewitness reports: 84.
  8. August: Usually moderate risk. High risk on 35% of days. Onshore wind on 23% of days. Official warnings: 0. Eyewitness reports: 111.
  9. September: Usually moderate risk. High risk on 4% of days. Onshore wind on 26% of days. Official warnings: 0. Eyewitness reports: 77.
  10. October: Usually moderate risk. High risk on 1% of days. Onshore wind on 53% of days. Official warnings: 0. Eyewitness reports: 73.
  11. November: Usually moderate risk. High risk on 2% of days. Onshore wind on 68% of days. Official warnings: 0. Eyewitness reports: 18.
  12. December: Usually low risk. High risk on 0% of days. Onshore wind on 76% of days. Official warnings: 0. Eyewitness reports: 18.
  • 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 Samui in July?

July in Koh Samui is a month of moderate risk. The prevailing west wind of about 3.7 m/s is blowing offshore; mean waves 0.32 m, water 30.7 °C. Based on 2022–2026 weather the model rates about 1% of days in this month as high risk. Official DMCR jellyfish warnings in July: 2.

Where in Koh Samui is the jellyfish risk lowest in July?

Based on this month’s weather the risk is lowest at: Lamai Beach, Taling Ngam Beach, Bang Po Beach.

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.