Jellyfish, Snakes and Wildlife in Phuket: Stings, Bites and First Aid

Jellyfish

Thailand's disease control department says jellyfish are more common in the rainy season, particularly in shallow coastal water after rain. Most stings are painful but not dangerous. Fire jellyfish are reported as the usual cause at Patong, and box jellyfish are described as an occasional, serious risk reported near Phuket and Krabi in windy, rainy months. Bluebottles were reported on several Phuket beaches in June 2026, including around Kata, Karon and Nai Harn.

Pay attention to beach flags, warning signs and lifeguards, and do not enter the water where signs say not to. A stranded jellyfish can still sting, so leave it alone. See the beach and sea safety guide, which covers rip currents and red flags.

Jellyfish first aid

• Get out of the water and ask a lifeguard for help. Several Phuket lifeguard posts keep vinegar available.
• For fire jellyfish and box jellyfish, officials advise pouring vinegar on the sting for at least about 30 seconds. Do not use fresh water or alcohol, which a Phuket marine official said makes the pain worse.
• Vinegar is not recommended for bluebottle stings, and sources note it may do little for some other species, so follow the lifeguard's or doctor's instructions.
• Seek urgent medical help for stings across large areas, severe pain, breathing trouble, collapse or a suspected box jellyfish sting. Call 1669 and see the emergencies guide.

Snakes

Phuket has venomous snakes, including cobras, but they usually avoid people. Stay on paths, use a torch at night, shake out shoes and watch where you put hands in gardens, wood piles and rubbish. If someone is bitten, keep them calm and still, do not cut or suck the wound, do not apply a tight tourniquet, and go to a hospital at once. Try to remember the snake's appearance, and do not try to catch it.

If a snake gets into your home, call the local municipality or an experienced handler rather than tackling it yourself. The electricity and water guide explains where homes are most vulnerable in the wet season.

Monkeys, sandflies and insects

• Macaques can bite. Do not feed them, keep bags closed and food out of sight, and avoid groups of monkeys. For bites, see the rabies guide.
• Sandflies are a nuisance on some beaches, especially around dusk, and repellent helps.
• Mosquitoes carry dengue, so see the dengue guide for prevention.
• Centipedes and scorpions are rarer, but check shoes and bedding in older or rural houses.

When to see a doctor

Go to a clinic or hospital for any bite that breaks the skin, a sting that spreads or blisters, signs of infection such as spreading redness or fever, and anything that worries you. Keep your insurance details handy. The health and insurance guide explains cover, and the first-week checklist helps you save emergency numbers early.