December · Vietnam
Best time to visit Phong Nha in December Weather, crowds & prices
Weather in Phong Nha in December
Average temperature 19°C, 182 mm of rain, about 0 days with 6+ hours of sunshine and 91% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
4.0/10
Ranked #9 of 12 months
- Avg temp
- 19°C
- Rainfall
- 182 mm
- Humidity
- 91%
- Days with 6h+ sun
- 0
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $$ · Moderate Cost ($$)
December in Phong Nha scores 4.0/10 for nature and wildlife travel - ranked #9 of 12. Expect around 19°C, 182 mm of rain, and roughly 0 days with 6+ hours of sunshine this month.
Phong Nha anchors the world's largest cave country with Son Doong expeditions and river cave boats. Best window: the drier months outside peak monsoon.
December in Phong Nha: expect compromises
December averages 19°C (65°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 182 mm this is a genuinely wet month: almost no days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 4/10 here, 9th of 12 months, against 7.3/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella, footwear you can get muddy.
Figure on mid-season pricing, with crowds are light for this destination.
Flexible dates? March scores 3.3 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Phong Nha in December?
- In December, Phong Nha averages 19°C, 182 mm of rain, and about 0 days with 6+ hours of sunshine. Its climate-comfort score is 4.0/10.
- Is December a good time to visit Phong Nha?
- December earns a 4.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Phong Nha in December?
- Expect about 182 mm of rain in December. Average humidity is 91% and there are about 0 days with 6+ hours of sunshine.
Curated in Phong Nha
Tickets & experiences
Things to do in Phong Nha
Phong Nha, Vietnam. Live activities and tours from GetYourGuide, matched to this destination.