January
15.3°C ~ 60°F
12 days of rain
Crowds: Quiet
Cao Bang
Phia Oac – Phia Den
A cool mountain national park with a forest hike and views over the Cao Bang uplands.
- Time needed
- Half day to…
- Entry fee
- No park ticket reported…
- Best months
- Sep – Nov
- Best time
- Spring and autumn
Overview
Phia Oac – Phia Den is a national park on a high mountain, with Phia Oac peak at about 1,930 m. The air is cool all year, and the forest is full of mist, ferns and pine trees, with a hiking trail to the top.
The park is popular with trekkers and with local people for weekends. A common route is a day hike to the peak, or a night in the park to see the stars. It is a good side trip for active travellers on the way to or from Cao Bang.
Highlights
- Hike the trail to Phia Oac peak
- Enjoy cool air and misty forest
- Stay overnight for stars and sunrise
- See pine trees and ferns
Visitor information
| Opening hours | Open all day |
|---|---|
| Entry fee | No park ticket reported Local guides and homestays are paid directly |
| Time needed | Half day to full day |
| Best time of day | Spring and autumn |
| Good for | Hikers, nature lovers |
| Accessibility | Uneven mountain paths |
| Facilities | Visitor centre, basic stays, small cafes |
Prices and hours can change. Check the official source before you go.
Best time to visit
Weather in Cao Bang by month.
February
16.5°C ~ 62°F
12 days of rain
Crowds: Moderate
March
20.5°C ~ 69°F
17 days of rain
Crowds: Moderate
April
23.7°C ~ 75°F
16 days of rain
Crowds: Moderate
May
26.1°C ~ 79°F
23 days of rain
Crowds: Quiet
June
27.6°C ~ 82°F
25 days of rain
Crowds: Quiet
July
27.8°C ~ 82°F
24 days of rain
Crowds: Quiet
August
27.4°C ~ 81°F
27 days of rain
Crowds: Quiet
September
26.5°C ~ 80°F
21 days of rain
Crowds: Busy
October
23.4°C ~ 74°F
13 days of rain
Crowds: Busy
November
20.2°C ~ 68°F
11 days of rain
Crowds: Moderate
December
15.8°C ~ 60°F
10 days of rain
Crowds: Quiet
How to get there
From Cao Bang centre
The park is about 2 hours by car from Cao Bang city, on the road to Nguyen Binh. A private car or a tour is the easiest way to get there.
Tips before you go
- Wear warm clothes; it can be cold
- Hire a local guide for the trail
- Check the weather and road conditions
- Bring water and snacks
Location
Phia Oac – Phia Den National Park, Nguyen Binh, Cao Bang
About 70 km from Cao Bang city
More attractions in Cao Bang
FAQs
How high is Phia Oac?
About 1,930 m. The park stays cool, even in summer.
Do I need a guide?
A local guide is recommended, since the trail can be unclear in mist.
Can I stay overnight?
Yes. There are basic stays in and around the park, but book ahead in season.