When is the best time to dive in Nha Trang?

April to August, when seas are calm and visibility is often 10 to 30 m with water around 28 to 30°C. January to March works but is cooler, around 25.5°C. September to December is the wet, rough season and boats are often cancelled.

How much does diving in Nha Trang cost?

Tour-boat guided dives and discover-scuba trips are listed at roughly 500,000 to 800,000₫ per dive in 2026, plus the 22,000₫ Hon Mun conservation fee. Full open-water courses over three days cost more and vary by agency and dive centre, so compare what is included.

What can you see at Hon Mun?

Hon Mun Marine Protected Area has over 300 species of hard coral and good macro life such as nudibranchs, frogfish and morays. Named sites include Moray Beach, Madonna Rock and Monkey Island. It is not a big-fish destination, and the reefs are shallow.

Can beginners dive in Nha Trang?

Yes. The bay is sheltered by islands, many sites are shallow and calm, and dive centres run discover scuba dives and Open Water courses. You need to be in good health and complete a medical questionnaire.

How do I choose a safe dive centre in Nha Trang?

Look for PADI or SSI membership with current instructor credentials, ask about group size, boat safety gear, oxygen and first-aid training, and see the equipment before you pay. Avoid anyone who skips the briefing or the medical form.

Diving in Nha Trang: Season, Sites, Hon Mun and Prices

Is Nha Trang good for diving?

Yes, for the price and the convenience. Nha Trang Bay is sheltered by its islands, which keeps silt down, and the Hon Mun Marine Protected Area offers coral gardens a 20 to 30 minute speedboat ride from the tourist port. The reefs are shallow and the diving suits beginners and macro photographers more than people chasing sharks or walls. Reviews and dive shops agree the best season is April to August.

When to dive

April to August is the peak: calm seas, little current, and visibility often 10 to 30 m. January to March has cooler water, around 25.5°C, and a bit more current. September to December is monsoon, and rough seas mean cancelled boats and poor visibility. Winter seas bring some surf instead, so the watersports page lists what to do when diving is off.

Hon Mun Marine Protected Area

Hon Mun was Vietnam’s first marine protected area. Entry carries a conservation fee of about 22,000₫ per adult in 2026 listings. Boats leave from the tourist port, usually with a stop for snorkelling. Expect rules on touching coral and sometimes restricted zones, so follow your guide.

Moray Beach

Known for giant morays, with good macro life around the rocks.

Madonna Rock

A rock with swim-throughs, popular for the topography.

Monkey Island

A calm, shallow site used for beginners and training dives.

What dives cost

Guided tour-boat dives are listed at about 500,000 to 800,000₫ per dive in 2026, with underwater photos around 300,000₫ extra. A three-day open-water course is more, and prices depend on the agency, group size and whether equipment is included. Cheap isn’t always safe, so compare inclusions.

Choosing a dive centre

There are many dive schools and quality varies. Check the agency affiliation (PADI or SSI), instructor credentials, group size, the boat’s safety equipment and whether the briefing and medical form are real. Pick an established name and check they follow proper safety procedure and have first-aid training. The PADI dive-centre locator lists active members.

Non-divers and snorkellers

Most Hon Mun trips also include snorkelling, and a glass-bottom boat costs about 60,000 to 100,000₫. If you want to stay dry, there’s seawalking. For more on boats, jet skis and wind sports, see the watersports page, and for the rest of the city the Nha Trang page.