Vietnam in September 2026: weather, resorts and prices

The country stretches 1,650 km from north to south, so on the same day Nha Trang can hit 33 °C with a quick downpour while Da Nang gets three straight days of rain. September opens the typhoon season. The central coast from Da Nang to Hue falls in the risk zone. Nha Trang sits south of the main typhoon corridor and is hit less often. Below is the full picture: weather by resort, typhoon risk, prices and where to go.

Data current as of 04/2026. Sources: weather2travel.com, seatemperature.info, vietnam.travel.

Vietnam weather in September — map and summary table

The nationwide average is around 28 °C — the heat backs off after the summer peak. But it is one of the wettest months: the central coast enters its rainy season, while the south is still in the monsoon, though showers get shorter.

Green pins are worth the flight in September, amber ones work with caveats, red ones are better left for another month. Tap a pin for temperatures and rainfall.

• Mui Ne / Phan Thiet (Mũi Né / Phan Thiết): Day 30–33°C, sea 27–28°C — Rain: ~17 days (~190 mm) — Peak rains, budget
• Sapa (Sa Pa): Day 20–25°C — Rain: 18–22 days (200–300 mm) — Golden terraces
• Nha Trang (Nha Trang): Day 30–33°C, sea 27–28°C — Rain: 8–12 days (80–150 mm) — Beach (with caveats)
• Ho Chi Minh City (TP. Hồ Chí Minh): Day 30–33°C — Rain: 18–22 days (250–300 mm) — Sightseeing (rain)
• Hanoi (Hà Nội): Day 29–33°C — Rain: 12–15 days (150–250 mm) — Sightseeing (easier than summer)
• Ha Long (Hạ Long): Day 28–32°C, sea 27–28°C — Rain: 10–14 days (150–200 mm) — Cruises (with caveats)
• Da Lat (Đà Lạt): Day 21–25°C — Rain: 20–24 days (200–300 mm) — Cool break (rain)
• Vung Tau (Vũng Tàu): Day 29–32°C, sea 27–28°C — Rain: 16–18 days (200–250 mm) — Limited
• Con Dao (Côn Đảo): Day 28–31°C, sea 27–28°C — Rain: 14–18 days (150–250 mm) — Limited
• Phu Quoc (Phú Quốc): Day 28–31°C, sea 27–28°C — Rain: 18–22 days (250–350 mm) — Not recommended
• Da Nang (Đà Nẵng): Day 28–33°C, sea 27–29°C — Rain: 14–18 days (200–350 mm) — Not recommended
• Hoi An (Hội An): Day 28–33°C, sea 27–29°C — Rain: 14–18 days (200–350 mm) — Not recommended

UV index: 7–9 (below the summer high because of cloud cover). Sunshine hours: Mui Ne 6–8, Nha Trang 5–7, everywhere else 4–6.

Weather by region

South (Ho Chi Minh City, Phu Quoc, Mui Ne, Phan Thiet, Vung Tau, Con Dao) — the monsoon is easing but still present. Ho Chi Minh City: 30–33 °C, 18–22 rainy days, showers shorter and less frequent than in July–August. Phu Quoc is still not for the beach: waves and rain. In Mui Ne and Phan Thiet September is the wettest month of the year: the climate norm is about 190 mm of rain over 17 rainy days.

Centre (Nha Trang, Da Nang, Hoi An, Hue) — the rainy season begins. Da Nang and Hoi An flip fast: 200–350 mm of rain, 14–18 rainy days. Hue is worse still — 300–450 mm, the wettest city. Nha Trang holds up better: 80–150 mm and 8–12 rainy days. More than summer, but bearable. Swimming is possible, though the surf picks up.

North (Hanoi, Ha Long, Ninh Binh) — the heat drops, which is a relief. Hanoi: 29–33 °C (down from 35–37 °C in summer). Fewer rainy days: 12–15. Ha Long: water 27–28 °C, cruises run, but typhoons are a risk. Ninh Binh: the rice fields turn golden, great for photos.

Highlands (Da Lat, Sapa) — wet. Da Lat: 21–25 °C. In Sapa the rice turns gold in the first half of September and most fields are cut by month's end, so time a golden-terrace trip for early-to-mid September. Mu Cang Chai holds its gold longer, into early October. The trails are muddy. More in our guide to Vietnam's rice terraces.

Typhoons — September's main risk

September opens the typhoon season (September–November). The main strike zone is the central coast from Hue to Quy Nhon, plus the north.

As a rule, storms stay over Vietnamese territory for no more than 3 daysthehien, Vinsky Forum, 2018, translated by VietnamSpot

What that means in practice:

• Da Nang, Hoi An, Hue — high risk. Airports can close and coastal hotels can be evacuated
• Nha Trang — medium risk. It sits south of the main corridor, so typhoons reach it less often. Heavy rain, yes; a direct hit, rarely
• Mui Ne, Phu Quoc, Ho Chi Minh City — low typhoon risk. Typhoons reach the south less often
• Hanoi, Ha Long — medium to high risk. Cruises may be cancelled

Early vs late September — is there a difference?

A real one. Early September still feels like August: heat, monsoon in the south, but typhoons are unlikely. By the end the heat drops 2–3 °C while the typhoon risk climbs. In the north it turns noticeably fresher late in the month: 27–29 °C.

For Nha Trang: early September is drier (80–100 mm), late September wetter (120–150 mm).

For Sapa: the golden terraces peak in early-to-mid September, and the rice is mostly cut by month's end. Want gold in late September? Head to Mu Cang Chai, where the harvest runs into early October.

Still weighing your dates? Check the neighbouring months: August has no typhoons yet but a full-on monsoon in the south, while October pushes central-coast typhoons to their peak as the south dries out.

Can you swim in Vietnam in September?

The sea is still warm: 27–29 °C. The problem isn't the temperature — it's the waves and the murky water. Storms grow more frequent on the central coast, while the south gets monsoon swell.

In Nha Trang swimming is possible but day-dependent: some days bring storms and red flags. In Mui Ne September is the peak of the rainy season. Da Nang and Hoi An aren't beach material in September.

Where to go in September — resort comparison

September is the most limited month for choice. No resort is reliably dry: Nha Trang and Mui Ne both come with caveats.

Mui Ne is the pick for low prices, among the lowest of the year. But September is its wettest month (Mui Ne weather, Phan Thiet weather), and the kitesurfing wind is among the weakest of the year — wind seasons are in our Mui Ne kitesurfing guide.

Nha Trang is for those ready to gamble on the rain. Diving is limited in September (visibility drops as the water clouds), but beach days between showers are fine. Nha Trang prices sit well below winter rates.

You can swim in the first half of the day… In the second half the wind picks up and drives the waves in… Heavy rain happens in the evening and at nightТильда53, Vinsky Forum, 2019, translated by VietnamSpot

Sapa is for photographers: the golden rice terraces in the first half of September are a sight worth getting muddy on the trails for. Miss the window and the fields are already cut — then aim for Mu Cang Chai instead.

What to do in Vietnam in September

Activities

• Kitesurfing in Mui Ne — September wind is among the weakest of the year, so check the forecast with the school. A lesson from about 2,000,000 VND (~$80)
• Photo hunting in Sapa — the golden rice terraces. A day trek from about 500,000 VND (~$20)
• Day trips from Hanoi — the heat has broken, so the Old Quarter is pleasant to walk. Hanoi means temples, lakes and street food

Rainy-day options

• Spa and massage — from about 300,000 VND (~$12)
• Cooking classes — pho, banh mi, Vietnamese pancakes
• Vietnamese coffee — rain on the glass, a fragrant cà phê sữa đá in front of you. September makes it especially fitting
• Ho Chi Minh City museums — the War Remnants Museum, the Reunification Palace

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Holidays and events in September

National Day brings a long weekend (August 29 to September 2 in 2026), when Vietnamese travellers head to the coast and prices on those dates run above normal. The Mid-Autumn Festival (Tết Trung Thu) is a colourful sight: children with lanterns and mooncakes (bánh trung thu) in every café.

How much a Vietnam trip costs in September

September is one of the cheapest months of the year: it is low season and hotels cut their rates.

Accommodation per night

4–5-star hotels release rooms at 30–50% of their winter rate. Resorts on Phu Quoc are cheaper still, but September isn't the month to go there.

Food and getting around

Prices current as of 04/2026. Sources: booking.com, Numbeo.

What to pack for September

September is warm and wet. Rain protection is priority number one.

Clothing

• Shorts, T-shirts, two swimsuits
• A light layer for air-conditioned rooms
• Closed shoes — sandals slip on wet pavements

Essentials

• A poncho — a must for every region
• A waterproof backpack or cover
• A waterproof phone case
• SPF 50+ — the UV index is 7–9, and you can burn under cloud
• Insect repellent

Documents and money

• Passport valid 6+ months
• US dollars in cash for exchange — clean, uncreased notes get the best rate
• A Visa or Mastercard for ATMs and larger venues; carry cash for street stalls
• Check the visa rules for your nationality before you fly

Fruit season in September

The main fruit season is winding down, but longan and sapodilla are at their peak. Persimmon is starting to appear.

Buy at local markets: Chợ Đầm (Nha Trang), Chợ Bến Thành (Ho Chi Minh City).

Common mistakes on a September trip

Picking Da Nang or Hoi An. September opens the typhoon season on the central coast: 200–350 mm of rain, closed beaches and possible flooding in Hoi An. Choose Nha Trang or Mui Ne instead.

Skipping insurance that covers natural disasters. A standard travel policy may not cover typhoon losses — a cancelled flight, an evacuation, damaged luggage. Check the terms.

Booking without free cancellation. A typhoon can flip your plans in 3–5 days. Hotels and flights with free cancellation are a must in September.

Going to Phu Quoc. Still monsoon. The discounts are tempting, but the reality is rain 20 days out of 30 and closed beaches.

Ignoring the forecast. In September it decides whether excursions, cruises and flights go ahead. Check it 5–7 days before you fly and 1–2 days before every excursion.

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