Phong Nha weather in December
December in Phong Nha: nice, rainy, with very humid — a great time to visit.
#4 of 12 months in Phong Nha · #411 of 897 destinations to visit in December · comfort 74/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Phong Nha in December
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Phong Nha climate normals — December
| Daytime high | 22°C / 71°F | 😎 nice |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Rainfall | 146 mm / 5.8 in | 🌧 rainy |
| Rainy days | 16 days | |
| Humidity | 89% | 💦 very humid |
| Dew point | 18°C / 64°F | |
| Sunshine | 4.6 h/day | |
| Daylight | 11.1 h | |
| Wind | 17 km/h / 10 mph | |
| Air quality (US AQI) | 65 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Phong Nha in December — FAQ
- Is December a good time to visit Phong Nha?
- December in Phong Nha: nice, rainy, with very humid — a great time to visit. It ranks #4 of 12 months for Phong Nha on SeasonMap's comfort score (74/100).
- What is the weather like in Phong Nha in December?
- In December, Phong Nha averages a daily high of 21.6°C and a low of 17.5°C, with about 146.3 mm of rain over roughly 16.2 rainy days.
- What is the air quality in Phong Nha in December?
- Phong Nha has a mean US Air Quality Index of about 65 in December.