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Hang Son Doong

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Hang Son Doong Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Hang Son Doong year round climate

  • Spring (March–May): Average 23.2–28.6°C, warm and humid climate, rainfall gradually increases. Common activities: Exploring the surrounding areas of the cave, hiking. Recommended clothing: Light and breathable clothing, rain gear.
  • Summer (June–August): Average 30.3–31.5°C, hot and humid, less rainfall. Common activities: Seeking refuge from the heat at the cave entrance, participating in nocturnal wildlife observation. Recommended clothing: Loose and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 24.2–28.1°C, comfortable climate, more rainfall, October is the rainiest month. Common activities: Cave exploration (Note: Safety precautions are essential, avoid entering during the rainy season), appreciating the surrounding natural scenery. Recommended clothing: Light waterproof jacket, long pants, rain boots.
  • Winter (December–February): Average 20.0–20.3°C, mild climate, less rainfall. Common activities: Relatively fewer outdoor activities, visiting nearby villages is an option. Recommended clothing: Light jacket, long pants.

Hang Son Doong climatological average

Annual average temperature: approx. 25.7°C / Annual rainfall: approx. 2706 mm / Summer humidity: 75%–85% / Rainiest month: October

Hang Son Doong monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
20°C
56.3
February
20.3°C
30.3
March
23.2°C
42.3
April
26.6°C
71.7
May
28.6°C
173.3
June
31.5°C
27
July
30.3°C
71.3
August
30.4°C
69.3
September
28.1°C
585.7
October
25.4°C
991.3
November
24.2°C
372.7
December
20.3°C
215.7

Hang Son Doong weather for the next seven days

12/20
Saturday
Patchy rain nearby
21.7°C/18.8°C
12/21
Sunday
Patchy rain nearby
24.2°C/19.8°C
12/22
Monday
Moderate rain
22.3°C/21°C
12/23
Tuesday
Moderate rain
23.5°C/20.3°C
12/24
Wednesday
Patchy rain nearby
23.5°C/19.8°C
12/25
Thursday
Patchy rain nearby
22.3°C/19.5°C
12/26
Friday
Patchy rain nearby
22.3°C/20.9°C

Hang Son Doong Frequently Asked Questions and Useful Information for Travel

Why is visiting Hang Son Doong so expensive?

The cost of visiting Hang Son Doong is primarily due to extensive environmental protection measures and the complex logistics involved in expeditions. The tour price reflects the high operational and administrative expenses required to maintain the cave's pristine condition and ensure visitor safety. These costs cover essential services like airport pick-up, accommodation, and all meals during the expedition, all managed to minimize the environmental impact on this unique natural wonder.

Are tourists allowed in Hang Son Doong cave?

Yes, tourists are permitted to visit Hang Son Doong cave, but access is strictly controlled to protect its delicate ecosystem. Visits are exclusively managed through guided expeditions organized by the sole authorized tour operator. Due to the limited number of visitors allowed annually and the strenuous nature of the trek, booking well in advance is essential. The expedition involves challenging activities such as extensive hiking, rappelling, and river crossings, requiring participants to be in excellent physical condition.

How much does it cost to visit Hang Son Doong cave?

The expedition to Hang Son Doong cave is a significant investment, with prices for the multi-day tours typically around USD 3,000 per person. This comprehensive fee includes all necessary logistics, transportation from Dong Hoi, meals and water throughout the journey, specialized guides and safety personnel, and all park entrance and environmental fees. This all-inclusive pricing ensures a safe and well-supported adventure into one of the world's most spectacular natural formations.

Is Son Doong cave fully explored?

While Son Doong cave was first fully explored in 2009, its immense scale suggests that its secrets are still being uncovered. Formed over millions of years by underground rivers carving through limestone, the cave's vastness and complex geological features mean that exploration is an ongoing process. Each expedition continues to reveal new insights into this geological marvel, highlighting its status as a dynamic and still-evolving natural wonder.

What kind of terrain can be expected inside Hang Son Doong cave?

The terrain within Hang Son Doong cave is exceptionally diverse and challenging, offering an unparalleled adventure. Explorers will encounter vast underground jungles, steep sinkholes that allow sunlight to penetrate, and significant elevation changes across the cave's massive passages. The expedition involves navigating rocky climbs, rappelling down sheer drops, and crossing subterranean rivers, presenting a true test of endurance and spirit.