March · Vietnam
Best time to visit Phong Nha in March Weather, crowds & prices
Weather in Phong Nha in March
Average temperature 22°C, 63 mm of rain, about 13 days with 6+ hours of sunshine and 87% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
March score
7.3/10
Ranked #1 of 12 months
- Avg temp
- 22°C
- Rainfall
- 63 mm
- Humidity
- 87%
- Days with 6h+ sun
- 13
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
March in Phong Nha scores 7.3/10 for nature and wildlife travel - the single best month of the year. Expect around 22°C, 63 mm of rain, and roughly 13 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.
March in Phong Nha — the year's strongest window
March averages 22°C (72°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.
Rainfall runs 63 mm, so plan one flexible day in three; you still get about 13 days with 6+ hours of sunshine and 11.9 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Phong Nha at 7.3/10 — the reference point every other month on this page is measured against.
Pack light clothing, a hat and real sun protection, a packable rain layer, footwear you can get muddy.
Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Phong Nha in March?
- In March, Phong Nha averages 22°C, 63 mm of rain, and about 13 days with 6+ hours of sunshine. Its climate-comfort score is 7.3/10.
- Is March a good time to visit Phong Nha?
- March earns a 7.3/10 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 March?
- Expect about 63 mm of rain in March. Average humidity is 87% and there are about 13 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.