Patong beach safety: flags, rip currents, jellyfish and jet skis

Patong's sea looks gentle most of the year, which is exactly why it catches people out. Drownings here are not rare, and almost all involve visitors swimming in red-flag conditions, outside patrolled areas or after drinking. The rules below are simple and they work.

What do the beach flags in Patong mean?

• Red-and-yellow flags: the area between them is watched by lifeguards. Swim here.
• Red flag: dangerous conditions, usually rip currents. No swimming at all, even to your waist.
• No flags: no lifeguard coverage or no assessment. Treat it as unsafe in rough weather.

Lifeguards may move the flags during the day as conditions change, and in the monsoon they sometimes close long stretches of the beach. If a lifeguard whistles at you, come in; they are not being fussy. Calm-looking water between breaking waves is often where a rip current is running.

How do you spot and escape a rip current?

A rip current is a narrow channel of water flowing out to sea. On Patong it forms most often when waves are big, but it can appear in any month. Look for a gap in the breaking waves, darker or murkier water, foam or debris moving out to sea, and a ripple on an otherwise smoother surface.

1. Don't fight it. Swimming straight back to shore against the flow exhausts even strong swimmers.
2. Float on your back and raise one arm to signal for help.
3. When the pull eases, swim parallel to the beach until you are out of the channel.
4. Swim back to shore at an angle, using the waves to help you in.
5. If someone else is caught, alert a lifeguard and throw something that floats; don't swim out yourself.

When is the sea rough in Patong?

Phuket's west coast has two seasons at sea. The northeast monsoon, roughly November to April, keeps this coast sheltered and calm. The southwest monsoon, roughly May to October, drives swell straight onto Patong, with the biggest waves usually from June to September. Conditions vary day to day, so the flags matter more than the calendar.

For weather beyond the sea, see the best time to visit guide.

Are there box jellyfish in Phuket, and what do you do if stung?

Jellyfish stings on Patong are usually minor, but dangerous box jellyfish have been recorded in Thai waters, including on the Andaman coast. The risk is low, and higher in the monsoon, after storms and in murky water. Some Phuket beaches have vinegar stations: posts holding a bottle of vinegar and first-aid instructions. Note where the nearest one is.

1. Get the person out of the water and keep them still.
2. Call 1669 if the sting covers a large area, or if there is trouble breathing, chest pain or confusion.
3. Pour vinegar generously over the sting for at least 30 seconds. Don't rub it and don't rinse with fresh water.
4. Remove remaining tentacles carefully with a stick or gloved hand.
5. Start CPR if the person stops breathing, and keep going until help arrives.

How do you handle sun and heat on the beach?

Phuket sits about eight degrees north of the equator, so the UV index is very high even when it is cloudy. Sunburn and heat exhaustion are the most common beach complaints.

• Avoid long exposure between 11am and 3pm; use the tree shade at the back of the beach.
• Use high-SPF, reef-safe sunscreen and reapply after every swim.
• Drink water steadily; alcohol in the sun dehydrates you fast.
• Watch for dizziness, headache, nausea or no sweating — get into shade and cool water, and call 1669 if confusion sets in.

Other hazards are smaller but worth knowing. Sea urchins and sharp rocks sit around the headlands at both ends of the beach, so wear water shoes if you explore them. Longtail boats and speedboats come in close at the south end; stay inside the buoys there. And keep an eye on the tide if you walk around rocks — it can cut off the way back.

What are the jet-ski rules and how does the damage scam work?

Jet skis on Patong must operate outside the buoyed swimming zones, and riders should wear a life jacket. Collisions with swimmers and other craft do happen, so if you ride, go slowly near the shore and stay well clear of the swimming area.

The well-known scam: on return, the operator points to scratches or cracks and demands a large payment for "damage", sometimes holding your passport as leverage. To protect yourself:

• Film the whole craft, close up, before you ride, with the operator in shot.
• Never hand over your passport as a deposit.
• Agree the price and time in writing, and ask about insurance.
• If a dispute starts, stay calm, don't pay on the spot, and call the Tourist Police on 1155.

Other common traps are covered in the money, safety and scams guide.

When are lifeguards on duty, and who do you call in an emergency?

Lifeguards on Patong work daytime hours only, roughly from morning until late afternoon or early evening, and are based at towers spaced along the beach. Outside those hours, and at the small coves nearby, nobody is watching. Save these numbers before you go to the beach:

• 1669: ambulance and medical emergencies.
• 1155: Tourist Police, English-speaking, 24 hours.
• 191: police.
• 199: fire.

Patong Hospital, the government hospital in town, has an emergency department, and private hospitals serve the wider Phuket area. Make sure your travel insurance covers water sports and medical evacuation.

For where to swim more safely, see the Patong Beach guide.