Phong Nha - Ke Bang Travel Guide

When to go

Climate

Monthly climate averages for Phong Nha - Ke Bang
Month	Avg temp (°C)	Rainfall (mm)	Rainy days (≥1 mm)
January	18.8	59	11.8
February	19.5	40	11.2
March	21.7	43	11.3
April	24.9	61	9.2
May	28.1	116	10.1
June	29.8	79	7.3
July	29.8	76	7.2
August	29.0	166	11.0
September	27.1	472	15.8
October	25.1	649	19.3
November	22.6	319	17.4
December	19.8	125	14.2

Data: long-term station averages from the Vietnam Institute for Building Science and Technology (IBST). Rainy days as reported by the station. Station: Nearest station is Dong Hoi on the coast, about 40km from Phong Nha.

Best Months to Visit

Best time: Feb-Aug dry season - caves open and accessible. Sep-Nov: floods can close caves and some trails. Avoid heavy rain season.

Highlights

A 400m zipline across the Chày River to the cave entrance, with scenic mountain viewsDark Cave
Dark cave passages explored with headlamps, swimming through underground pools, ending at the mud bathDark Cave
A broader river 'water park' area with kayaking, paddle boards, a shorter zipline, and inflatable/obstacle activitiesDark Cave
Become a 'Duck Leader' for the day - feed, parade, and get a ticklish 'duck massage' from over 120 free-roaming ducksThe Duck Stop
A genuine family-run farm experience, including a short tour of local crops, buffalo riding, and homemade bánh xèo pancakeThe Duck Stop
One of the original Phong Nha Duck Stop locations - worth confirming you're visiting the real one rather than a copycat nearbyThe Duck Stop
A special national historical relic marking the site where eight Youth Volunteers - four men and four women - were killed by American bombing in 1972Eight Ladies Cave
Located directly on Road 20 - Quyết Thắng, roughly 2.5km from the Trạ Ang bridge crossroadsEight Ladies Cave
Includes a shrine, memorial wall, and information display about the historical event, alongside the sealed cave itselfEight Ladies Cave
World's third largest cave - 1.6km long, 145m ceiling, 200m wide passages, 3km from Sơn Đoòng via underground riverHang En Cave

What To Do

Nature & Outdoors

Caving
Kayaking
Swimming
Trekking
Wildlife
Camping
Hiking
Cycling

Culture & History

History
Photography

Chill & Relax

Boat Tour

Suggested Itineraries

2D1N

Core caves

Day 1Phong Nha Cave + Dark Cave

Phong Nha CaveDark Cave

Phong Nha Cave by boat - 1.5 hours on the Son underground river, stalactites, Buddhist altars. Dark Cave: zip line across the river, swim through 400m of darkness, mud bath at the end. Best fun you'll have in a cave anywhere.

Day 2Paradise Cave

Paradise Cave

Paradise Cave is 30km from Son Trach. 1km of boardwalk through a cathedral-scale cave - one of the most visually spectacular in the world. Go early before the tour buses arrive. Mooc Spring (swimming hole in the jungle) on the way back.

3D2N

Full cave experience

Day 1Phong Nha Cave + Dark Cave

Phong Nha CaveDark Cave

Classic first day. Book Dark Cave in advance during peak season.

Day 2Paradise Cave + Mooc Spring

Paradise CaveMooc Spring

Full day at Paradise Cave and surroundings. Mooc Spring for swimming in the afternoon.

Day 3Hang En or jungle trek

Hang En Cave

Hang En is one of the world's largest caves - visited on a 2-day overnight trek (book weeks in advance, around 8,800,000 VND all-inclusive; closed Oct-Nov for floods). Or: rent a motorbike and ride the Ho Chi Minh Road through the jungle.

Places to Visit · 9 spots

Photo coming soon

Cave

Dark Cave

Dark Cave is Phong Nha's most adventurous experience - a zip line over the Chày River, kayaking into a pitch-black cave, swimming through underground passages, and a mineral mud bath inside the cave chamber, all packaged into one of Vietnam's best adventure activities.

Mar - Jul

Photo coming soon

Farmland

The Duck Stop

The Duck Stop is a family-run duck-feeding farm in Bong Lai Valley near Phong Nha - a quirky, TikTok-famous attraction where visitors become 'Duck Leader' for a day, feeding and interacting with over 120 free-roaming ducks, riding a buffalo named Donald Trump, and sampling a homemade bánh xèo pancake on a genuine working farm.

Apr - Aug

Photo coming soon

Cave

Eight Ladies Cave

Eight Ladies Cave (Hang Tám Cô) is a special national historical relic on Road 20 - Quyết Thắng in Phong Nha-Kẻ Bàng, marking the site where eight young Youth Volunteers - four men and four women - were killed by American bombing on November 14, 1972, while sheltering in a roadside cave.

Mar - Aug

Cave

Hang En Cave

Hang En is the third largest natural cave in the world - 3km from Sơn Đoòng, accessible by 2-day 1-night trek through jungle and Bru-Vân Kiều village, with a night camping on a white sandbar inside the cave under a 145m ceiling. The accessible alternative to Sơn Đoòng.

Dec - Aug

Photo coming soon

Stream

Mooc Spring

Mooc Spring is Phong Nha's most beautiful swimming spot - a natural spring emerging from the karst limestone in a jungle clearing, forming a series of turquoise pools across two zones (Ghềnh Moọc and Ghềnh Chụm), 7km from Sơn Trạch and one of the most scenic outdoor swimming areas in central Vietnam.

Feb - Aug

Cave

Paradise Cave

Paradise Cave (Động Thiên Đường) is one of Asia's longest dry caves at 31.4km - the 'underground palace' discovered in 2005 by a local man following cool air from a rock crevice, opened to visitors in 2010. A 1km wooden boardwalk leads through chambers up to 100m high, with stalactite formations resembling Buddhist figures and Champa towers.

Apr - Aug

Forest

Phong Nha Botanic Garden

Phong Nha Botanic Garden is a protected forest reserve on the edge of Phong Nha-Kẻ Bàng National Park, 7km from Sơn Trạch village - despite the name, the main draw is a jungle trek to Gió Waterfall and its natural swimming holes, not a classic flower garden.

Year-round

Cave

Phong Nha Cave

Phong Nha Cave is the oldest cave in the Phong Nha-Kẻ Bàng UNESCO World Heritage Site - a 7.7km limestone grotto with an underground river, navigated by wooden boat through chambers of stalactites, with the Son River flowing turquoise below.

Mar - Aug

Cave

Son Doong Cave

Son Doong is the largest cave in the world - big enough to contain a 40-story skyscraper, with its own weather system, jungle, and river inside. Access is by expedition only, with a strict annual quota making it one of the most exclusive natural experiences on earth. All tours run exclusively through Oxalis Adventure.

Jan - Aug

Getting There

Huetrain

3 hoursfrom 100,000 VND

To Dong Hoi station (50km south of Son Trach). Taxi or bus from Dong Hoi to Son Trach: 150,000-200,000 VND.

Huebus

3.5 hours100,000-150,000 VND

Direct buses to Dong Hoi. Some run direct to Son Trach.

Hanoitrain

about 10 hoursfrom 200,000 VND

Overnight train to Dong Hoi. Most convenient from Hanoi.

Da Nangbus

4-5 hours150,000-200,000 VND

Emergency & help

112Emergency (all services)
113Police
114Fire and rescue
115Ambulance

Free from any phone. National emergency line since 2025, routes to police, fire or ambulance.