Safety · Destination Guide
Base on Koh Phangan for Sail Rock big-fish dives, Koh Ma snorkel days, and jungle-to-beach downtime
Updated Jan 23, 2026 • 15 sources
Koh Phangan diving is generally straightforward, but offshore sites demand respect for current, surface conditions, and boat traffic. Build conservative plans, use local briefings, and carry insurance that covers emergency evacuation and hyperbaric treatment.
Monsoon crossings and cancellations
Late-year months can bring rough seas that cancel ferries and day boats. Keep a buffer day, avoid tight flight connections, and be flexible with offshore dive plans.
Box jellyfish risk
Box jellyfish have been reported in the region. Follow beach warnings, consider protective swimwear in higher-risk periods, and learn first aid: vinegar can help for box-jellyfish stings, and urgent medical response is critical for severe reactions.
Scooter accidents
The most common serious injury on the islands is from motorbikes. Ride only if properly licensed, always wear a helmet, and assume sand and rain make corners slick.
Currents at offshore pinnacles
Sail Rock and Koh Tao pinnacles can run current. Listen to briefings, stay near the structure, and carry an SMB for drift ascents.
Do Not Do This
Avoid entering when monsoon crossings and cancellations. Confirm local briefings before committing.
| Contact | Role | Phone | Availability |
|---|---|---|---|
| Thailand Tourist Police | Tourist assistance and reporting | 1155 | 24/7 |
| Thailand Medical Emergency (EMS) | Ambulance and medical emergencies | 1669 | 24/7 |
| Thailand Police | Emergency police | 191 | 24/7 |
| SSS Recompression Chamber Network (Samui) | Diving injury consultation and recompression coordination | +66 (0)77 427 427 | Contact line; emergency mobile available 24/7 |
| SSS Recompression Chamber Network (Samui) Emergency Mobile | 24/7 emergency mobile for chamber coordination | +66 (0)81 081 9555 | 24/7 |
| Bangkok Hospital Samui | Hospital emergency services (Koh Samui) | 1719 | 24/7 (hospital emergency) |
| DAN (Divers Alert Network) Emergency Hotline | Dive medical emergency coordination | +1-919-684-9111 | 24/7 |
| DAN Asia-Pacific Emergency Hotline | Dive medical emergency coordination (Asia-Pacific) | +61-3-9886 9166 | 24/7 |