Phong Nha Weather & Climate: Best Time to Visit

The climate in Phong Nha experiences moderate temperature changes, with mild shifts between seasons. Average maximum daytime temperatures range from a very warm 33°C (91°F) in June, the warmest time of the year, to a comfortable 22°C (72°F) during cooler months like January.

At night, you can expect temperatures ranging from 26°C (79°F) in June to around 16°C (61°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Phong Nha is known for its substantial rainfall, with annual precipitation reaching 2116 mm (83 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, October it receives heavy rainfall, averaging 459 mm (18 in) of precipitation, recorded across 11 rainy days. In contrast, the driest month February brings less rainfall, with 70 mm (2.8 in) over 5 rainy days. For more details, please visit our Phong Nha Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Phong Nha. While July receives considerable daily sunshine with up to 8.4 hours, February marks the darkest time of the year, where sunshine is scarce with only 2.5 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The city experiences its highest humidity in February, reaching 88%. In July, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year