Vietnam Weather in September

The weather in Vietnam in September is a fantastic combination of transitional elements. This month offers travellers a variety of climatic conditions across the country, promising opportunities for outdoor activities and relaxation.

What is the weather like in Vietnam in September?

The weather in Vietnam in September marks the transition from the rainy season to the dry season in many parts of the country. However, it should be noted that the weather can vary significantly depending on the region chosen for travelling.

  • Northern Vietnam (Hanoi , Halong Bay, Sapa): September is considered the beginning of the autumn season. Compared to previous months, the weather has become cooler and more comfortable. The amount of rainfall decreases and you can expect more sunny days with less humidity. However, occasional showers are still possible.
  • Central Vietnam (Hue, Da Nang, Hoi An): For central Vietnam, September is usually a transitional period between the rainy season and the dry season. With the onset of this month, rainfall decreases and the weather becomes more favourable for outdoor activities. However, sometimes, especially at the beginning of the month, brief showers or thunderstorms are still possible.
  • Southern Vietnam (Ho Chi Minh City, Mekong Delta): the wet season lasts from May to October, with September falling during this period. This means frequent rainfall, high humidity and occasional thunderstorms. The rains can be very heavy and can affect your walking plans.

Planning a trip this September? Make sure to check our Vietnam itineraries.

craggy rocks, Halong Bay. vietnam.

Halong Bay. Vietnam

Is Vietnam warm in September?

The weather in Vietnam in September is generally warm, especially in the southern and central regions. In these areas, temperatures can still be quite high due to the lingering effects of the summer season.

September marks the beginning of the autumn cold season in the country's north. Daytime temperatures can range from 22-30°C (72-86°F), while evenings and nights can be cooler, dropping to 20°C (68°F) or lower.

The weather in central Vietnam in September is warm and humid. Daytime temperatures usually range between 24-34°C (75-93°F). Temperatures can become more comfortable as the month progresses.

The weather in southern Vietnam in September remains quite warm and humid. Daytime temperatures can range from 28 to 31°C (82-88°F) or even higher. The humidity can also be quite high, making it feel warmer than it really is.

Rough Guides tip: A trip to Vietnam is a once-in-a-lifetime experience. Do you want to get the best out of your trip? Connect with our Vietnam local experts.

Hoang Lien National Park in Vietnam © Shutterstock

Hoang Lien National Park in Vietnam © Shutterstock

Is September a good time to visit Vietnam?

September can be a somewhat ambiguous time to visit Vietnam, and whether it's the right time for your trip depends on your preferences, the specific regions you plan to visit, and what you want to experience.

September marks the transition from the rainy season to the dry season in many parts of the country. Although it may still rain from time to time, the overall rainfall decreases, making it a more favourable time for outdoor activities and sightseeing.

However, despite the general trend towards drier and more comfortable the weather in Vietnam in September can still be somewhat changeable. At times, especially early in the month, showers or thunderstorms are possible.

Also, September falls outside of the peak tourist season, which means you are likely to encounter fewer crowds at popular tourist sites, helping you to have a more enjoyable experience.

Not quite sure when to go? See our guides to the Vietnam weather in August or Vietnam in October .

Mekong Delta Vietnam © ImaginativeGifts/Shutterstock

Mekong Delta Vietnam © ImaginativeGifts/Shutterstock

Average rainfall in September

As with the temperature, the amount of rainfall in Vietnam in September varies depending on the selected region. In the northern region, the wet season lasts from May to September, with July and August usually being the wettest months. Average rainfall in September can be around 293 mm (11.54 inches).

The wet season in Central Vietnam lasts from September to December, with October and November being the wettest months. The average rainfall in September is about 274 mm (10.8 in).

In the south, the wet season lasts from May to November, with rainfall peaking in June and August. Average rainfall in September can be around 28 (from 11.07 inches).

Make sure to read all about and the best time to visit Vietnam.


Nha Trang, Vietnam @ Shutterstock

Ready for your dream trip to Vietnam in September?

Our tailor-made trip service allows you to go on the trip of your dreams without the planning or hassle. All of our planned itineraries are created by Vietnam local travel experts and can be tailored to meet your specific needs.

  • Quintessential Vietnam (9 days): Uncover the secrets of vibrant Ho Chi Minh City and the colonial charms of Vietnam’s capital Hanoi. Explore the lush rice paddies and traditional villages of the Mekong Delta and former imperial Hue. Complete your trip with an overnight cruise to the stunning limestone caves of Halong Bay.
  • Vietnam Family Adventure (10 days): Visit Northern Vietnam, anchored by the ancient city of Hanoi, go east and take in the stunning island-studded Halong Bay. As you make your way down the country, stop in charming coastal Hoi An before venturing south to experience exciting and bustling Ho Chi Minh City.
  • Vietnam Culinary Discovery (10 days): Vietnamese cuisine can be divided into three categories, each pertaining to a specific region, namely the North, Centre and South. You will visit all of these on this culinary tour of Vietnam.

Want to see more options to choose from? Discover all of our Vietnam itineraries.

Halong Bay fishing village, Vietnam © Shutterstock

Halong Bay Fishing Village, Vietnam © Shutterstock

What to do in Vietnam in September

In September, several regions in Vietnam offer unique experiences and pleasant weather. Hanoi enjoys more comfortable weather this month. You can explore its historical sights, and lively markets and enjoy the city's rich cultural life.

September is perfect for exploring the rice paddies of the Sapa region. After the rainy season, the terraced rice paddies become lush and green and you can fully enjoy the local scenery.

The historic city of Hue is warm and less touristy. Explore the Imperial City and historical sites. Enjoy the beautiful beaches of Da Nang, explore the Marble Mountains and take advantage of the improving weather conditions for outdoor activities.

Although rain is still possible in September, the charming ancient city of Hoi An and lantern-lit streets are a beautiful sight. Ho Chi Minh City has high humidity and occasional rain, but you can still experience its vibrant street food, historic sites and bustling markets.

Despite the wet season, the Mekong Delta is a unique place to experience the local way of life and floating markets. Be prepared for the possibility of flooding, which can be an interesting cultural experience.

September is also suitable for enjoying Vietnam's beautiful beaches. The weather improves in the resort city of Nha Trang where you can enjoy the beaches, water activities and local cuisine. On the tropical island of Phu Quoc, located in the south of the country, the weather becomes drier, making this a favourable time to relax.

Want to know even more useful information about Vietnam before your trip? Read our Vietnam travel tips.

Olga Sitnitsa

written by
Olga Sitnitsa

updated 14.05.2024

Online editor at Rough Guides, specialising in travel content. Passionate about creating compelling stories and inspiring others to explore the world.

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