Ha Long

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Weather in Sep

🗓 Season: Storms easing

Quiet and local-feeling this month — the trade-off is usually the weather.

🟢 Off-season (local feel)

What to wear & pack 🎒

Expect hot, very rainy, humid conditions — days around 31°C, nights near 25°C, ~22 rainy days.

Best time to go

September works, but October or November is the sweet spot for Ha Long.

Best months: October, November, March, April — clear-enough skies and calm seas for cruising the karsts, minus summer’s domestic crowds and storms

Visas & entry 🛂

ℹ️ Entry rules for Vietnam

Set your passport country in Account to see whether you can enter visa-free.

Create a free account with your passport country for personalized checks →

• Passport must be valid 6+ months beyond arrival.

• Use only evisa.gov.vn — lookalike sites overcharge.

Official Vietnam e-Visa portal ↗ · Vietnam Immigration Department ↗

Guidance checked July 2026. Rules change — always confirm on the official government site before booking. Not legal advice.

Top places to visit

Tap a place for map & background links.

Ha Long Bay overnight cruise

sleep among 1,600 limestone islands

🗺 Open in Google Maps 📖 Read more (Wikipedia)

Sung Sot (Surprise) Cave

cathedral-scale grotto on Bo Hon island

🗺 Open in Google Maps 📖 Read more (Wikipedia)

Ti Top Island viewpoint

the classic 360° bay panorama

🗺 Open in Google Maps 📖 Read more (Wikipedia)

📍

Kayaking Luon Cave lagoon

paddle under a karst arch into a hidden bowl

🗺 Open in Google Maps 📖 Read more (Wikipedia)

Adventures nearby 🥾

Hikes, mountains and outdoor days within reach — tap for details.

Cat Ba National Park — Ngu Lam peak

jungle ridge walk above the karst archipelago

🗺 Open in Google Maps 📖 Read more (Wikipedia)

Kayak the Lan Ha lagoons

paddle through arches into enclosed emerald bowls

🗺 Open in Google Maps 📖 Read more (Wikipedia)

Rock climbing on Cat Ba

deep-water solo over the bay with local guides

🗺 Open in Google Maps 📖 Read more (Wikipedia)

Hidden gems 💎

Lan Ha Bay (via Cat Ba)

the same karst seascape with a fraction of the boats

🗺 Open in Google Maps 📖 Read more (Wikipedia)

💎

Vung Vieng floating village

pearl farms and stilt life far from the marina

🗺 Open in Google Maps 📖 Read more (Wikipedia)

Bai Tu Long Bay

the quiet northeastern third most itineraries skip

🗺 Open in Google Maps 📖 Read more (Wikipedia)