Short answer
Follow storm warnings, wear life jackets on boats and kayaks, ride scooters only if licensed and experienced, keep away from the monkeys and check seafood prices before ordering. Emergency: 113 police, 115 ambulance.
01Storms and typhoons
From July to October, tropical storms can bring strong winds, heavy rain and rough seas. When a warning is issued, all boats are suspended and outdoor activities stop. Follow your hotel and the local authorities, stock up on water and keep your phone charged.
02On the water
- Wear the life jacket on every boat and kayak
- Do not swim near boat channels or fish farms
- Avoid swimming after drinking
- Ask about jellyfish in summer
- Check that boats carry enough life jackets, including child sizes
03On the road
Steep, winding roads, heavy vehicles and sudden rain make riding risky. Only ride if you hold a valid licence and are experienced, always wear a helmet and avoid riding at night. See Getting around.
04Wildlife and nature
- Do not feed or approach the macaques on Monkey Island
- Seek medical care after any animal bite
- Watch for snakes on forest trails and wear closed shoes
- Use repellent against mosquitoes
05Scams and overcharging
- Agree seafood prices per kilo and check the weight
- Confirm what tours include before paying
- Agree taxi and private boat fares in advance
- Buy bus and boat tickets from reputable offices or your hotel
06Health care
The island has pharmacies and a basic medical centre. Serious cases are transferred to Hai Phong. Travel insurance with medical evacuation is essential.
?Questions people ask
Is Cat Ba safe for solo female travellers?
Generally yes. Normal precautions apply, especially at night and when drinking.
Is it safe to swim in Lan Ha Bay?
Yes, in calm weather and away from boat traffic and fish farms. Ask locals about jellyfish.