Nha Trang

Nha Trang's diving is built around Hon Mun, Vietnam's first marine protected area, and the reef there collapsed. The Nha Trang Bay Management Board recorded hard coral cover on the northeast of Hon Mun falling from about 54% in 2015 to 32% in 2022, on the southeast from over 50% to about 11%, and on the southwest to about 8% over the same period.

Best time
Mar–Aug
Certification
Open water
Budget
$ · under $2,000
Trip length
3–7 days
Trip style
Day trip, Land based
Access
Easy

The short version

Known forMadonna Rock's tunnels, caverns and swim-throughs at 5–25m, filled with glassfish and holding a well-known resident grouper.

Main tradeoffHon Mun's reef collapsed.

Close-up of a small blue nudibranch with black stripes clinging to coral

Photo: Ekaterina Zlotnikova / Unsplash

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Your outlook

Explore 8 dive sites

Browse the map and wildlife below, or add an optional preference to narrow Nha Trang.

Most relevant wildlife

  • Giant morayJan–Dec
  • AnemonefishJan–Dec
  • LionfishJan–Dec
  • NudibranchJan–Dec

Plan the trip

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8 sites shown.

Conditions referenceSeason, water and visibilityBest Mar–Aug · Mild current · 24–30°C (coldest Jan, warmest May)
Best months Operating
Current
Mild
Water temperature
24–30°C (coldest Jan, warmest May)
Visibility
5–15m: Typically 10–15m on a good day, and frequently less: 5–8m after rain or wind is ordinary.
Experience
This is a beginner's region by design.

01 · Marine life

What you may see

rareoccasionalcommonly seenpeak seasondestination closed

Sightings are never guaranteed. The bars show typical likelihood by month.

Giant morayGymnothorax javanicus
Sighting likelihood by month
MonthLikelihood
Januarycommonly seen
Februarycommonly seen
Marchcommonly seen
Aprilcommonly seen
Maycommonly seen
Junecommonly seen
Julycommonly seen
Augustcommonly seen
Septembercommonly seen
Octobercommonly seen
Novembercommonly seen
Decembercommonly seen

Moray Beach takes its name from them and they are seen on most dives there, tucked into coral heads and rubble.

AnemonefishAmphiprion spp.
Sighting likelihood by month
MonthLikelihood
Januarycommonly seen
Februarycommonly seen
Marchcommonly seen
Aprilcommonly seen
Maycommonly seen
Junecommonly seen
Julycommonly seen
Augustcommonly seen
Septembercommonly seen
Octobercommonly seen
Novembercommonly seen
Decembercommonly seen

Anemones with resident clownfish are scattered across the shallow sites and are one of the few reliably photogenic subjects on a training dive.

LionfishPterois volitans
Sighting likelihood by month
MonthLikelihood
Januarycommonly seen
Februarycommonly seen
Marchcommonly seen
Aprilcommonly seen
Maycommonly seen
Junecommonly seen
Julycommonly seen
Augustcommonly seen
Septembercommonly seen
Octobercommonly seen
Novembercommonly seen
Decembercommonly seen

Present on essentially every site in the bay, from the 13m training slopes up to the pinnacles.

NudibranchNudibranchia (order; multiple species)
Sighting likelihood by month
MonthLikelihood
Januarycommonly seen
Februarycommonly seen
Marchcommonly seen
Aprilcommonly seen
Maycommonly seen
Junecommonly seen
Julycommonly seen
Augustcommonly seen
Septembercommonly seen
Octobercommonly seen
Novembercommonly seen
Decembercommonly seen

The most consistent thing in the water here.

See all 12 species

02 · Dive sites

Dive sites worth knowing

A starting point, not a ranking. Conditions decide what works on the day.

See all 8 dive sites
03 · LogisticsGetting there and costsEasy. Fly to CXR. Typical trip $.

Route overview

Easy

Day trips from a coastal base, about 1h from the airport, then a short boat.

Airport options

CXR

Cam Ranh International Airport

International airport with direct regional flights from Seoul, Kuala Lumpur, Singapore, Bangkok and elsewhere in Asia, plus frequent domestic links from Hanoi and Ho Chi Minh City; roughly 45 minutes by road to Nha Trang

Typical trip cost

$

under $2,000

Per person, excluding international flights.

  • Among the cheapest diving in Asia.
  • Two-tank day trips run roughly $70–80 on busy group boats (8–12 divers), $80–100 for smaller groups and better gear, and $125+ for private-boat or technical setups.
  • A PADI Open Water course is commonly $330–450 all-in, which is why most people dive here at all.
  • Nha Trang Bay entrance fees are trivial: VND 10,000 (about $0.
  • 40) per trip on the Hon Mun route, VND 40,000 (about $1.
  • 55) for a multi-island trip.
  • A week here including accommodation sits comfortably under $2,000 per person excluding flights.

Sources & last checked

Checked August 2026

Research is source-backed, but conditions and fees should still be confirmed locally.

View 10 sources and checking notes

Note on the data: Coral-cover figures and the 2022 diving suspension are well sourced to Vietnamese state media citing the Nha Trang Bay Management Board (Viet Nam News, Nhan Dan). The current 2026 status — strict-protection core still closed, diving continuing in designated zones under visitor caps — is corroborated across a July 2026 vietnam.vn report and 2026 tourism coverage, but no English-language provincial decision document was fetched directly, so the precise boundary of what is open is uncertain. One secondary source claims coral cover 'climbed back to 74.5%' after a one-year suspension; that figure could not be traced to the Management Board and is deliberately not used here. Entrance fees are primary-sourced to the 25 August 2025 regulation as reported by Viet Nam News. Site coordinates are approximate positions around Hon Mun island, not surveyed dive-site GPS. Site depths come from operator and dive-guide listings. operatingSeasonMonths includes January and September, when boats run but cancellations are more frequent; October is excluded as marginal and November–December as effectively closed. Species presence is drawn from operator site descriptions rather than survey data — reasonable for macro, weak for anything larger. Water temperature: Monthly surface averages run 25.5°C in January and February up to 29°C from May to September; the min/max values here are interpolated around those published averages to allow for depth and short-lived upwelling, not measured at depth. A 3mm suit is enough year-round. Access: About as easy as dive access gets in Southeast Asia: Cam Ranh International (CXR) takes direct regional flights and is roughly 45 minutes by road from Nha Trang, and dive boats reach the Hon Mun area in about 30–45 minutes from the Cau Da and Vinh Nguyen piers. The '74.5%' figure is traceable -- VnExpress and Tuoi Tre (Aug 2023) attribute it to the Nha Trang Bay Management Board from surveys in late 2022 and March 2023 -- but it measures live coral cover including soft coral on the north and southwest sides only, so it is not comparable to the 2015-2022 hard-coral series and is deliberately not used here. Independently verified 2026-08-28 against the Khanh Hoa Provincial Party portal, VnExpress International, Thanh Nien and Bao Khanh Hoa (May 2026): the 2022 collapse, the 27 June 2022 suspension and the absence of any reopening decision as of August 2026 all confirmed, and the four pilot dive zones Khanh Hoa approved are away from Hon Mun and ban tank diving. Corrections applied: the coral-cover sector labels were scrambled (the ~32% figure is the northeast alone; the southwest is the worst sector at ~8%), the fee began collection 25 September not 25 August, the two-tank price floor was too low, and 'October to December is effectively a write-off' was contradicted — operators run a deliberate Nov–April rotation onto Hon Mun's sheltered south side, so the season is now coded all 12 months with the honest warning that late October to January is the bad half and the bay does not clear until late January.