If you’re planning a trip to Hoi An, understanding the weather is key to making the most of your experience. So what is Hoi An Vietnam weather in September really like? In this guide, Jellyfish will give you a full overview of the September weather in Hoi An, including temperature, rainfall, activities, packing tips, and whether this is a good month to visit.
1. What’s the Weather Like in Hoi An in September?
September signals the beginning of the rainy season in central Vietnam, including Hoi An. That doesn’t mean constant downpours — but rather warm, humid days with intermittent rain showers, especially in the afternoon or early evening.
- Season: Start of the wet season (transitional month)
- Vibe: Fewer tourists, greener scenery, and a softer, more romantic atmosphere
- Common misconception: Many assume September is “off-limits” due to rain, but it’s actually a peaceful shoulder season with good deals and photo-worthy skies
2. Average Temperature in Hoi An in September
If you’re expecting cool autumn vibes, think again — Hoi An Vietnam weather in September is still very warm.
- Daytime temperature: 30–32°C (86–89.6°F)
- Nighttime lows: 24–26°C (75–78.8°F)
- Feel: Hot, especially mid-day, with the humidity making it feel warmer
Tip: Plan outdoor activities in the morning and relax indoors after 2-3 PM when showers are more likely.
3. How Rainy Is It Really?
One of the biggest concerns travelers have is rainfall in September. Here’s a breakdown:
- Monthly rainfall: ~350–400 mm
- Rainy days: Around 17–20 days (but many are just short tropical showers)
- Humidity: 80–90%, making the air feel heavy
But here’s the good news: Most rain is short and predictable. Local vendors even say, “It rains hard but not for long.” You can easily enjoy your trip with a flexible mindset and a poncho.
4. Should You Visit Hoi An in September? Pros and Cons
Wondering if September is a good month to visit Hoi An? Let’s weigh the benefits and drawbacks:
4.1 Pros
- Fewer crowds: Hoi An Ancient Town is less packed, allowing peaceful walks and no lines at famous spots
- Lush landscapes: Post-summer greenery makes rice fields and gardens look vibrant
- Discounted rates: Hotels and tours often offer 10–30% off compared to peak season
- Cooler nights: Easier to sleep compared to June–August heat
4.2. Cons
- Rain disruption: Beach days or outdoor photoshoots may be interrupted
- Occasional flooding: Especially at the end of the month in low-lying areas
- Humidity fatigue: Walking around midday can feel tiring
5. Best Things to Do in Hoi An in September
Even with a few rainy spells, there’s no shortage of wonderful activities. In fact, some are even better with rain.
5.1 Indoor & Cultural Activities:
- Lantern-making workshops: Learn to create your own paper lantern — great for souvenirs and rainy afternoons
- Cooking classes: Try making cao lầu, bánh xèo, or fresh spring rolls in covered kitchens
- Tailor shops: Rainy weather is perfect for getting custom clothes made — and doing fittings over coffee
- Traditional theaters: Watch water puppet shows or traditional dance at Lune Performing Center
5.2 When the Weather is Clear:
- Explore Ancient Town early morning: Photogenic streets + cooler air
- Visit Tra Que Vegetable Village: Green, peaceful, and hands-on
- Take a bike ride to Cua Dai beach or rice fields: Just avoid after rain for muddy roads
6. What to Pack for September in Hoi An
If you’re traveling in this season, packing smart is a must. Here’s what you’ll need:
- Breathable clothing: Cotton, linen, or moisture-wicking fabrics
- Umbrella and rain poncho: Compact and easy to carry
- Waterproof sandals or quick-dry shoes
- Reusable water bottle (hydration is key!)
- Bug spray (mosquitoes thrive in humid weather)
- Waterproof phone pouch for rainy walking tours or boat rides
7. Smart Tips for Traveling to Hoi An in September
- Check the daily forecast in the morning — locals rely on apps like AccuWeather or Windy
- Book indoor activities as backups (spas, workshops, tea houses)
- Start your day early, as storms are more common in the afternoon
- Use hotel laundry services — things take longer to dry in humid air
- Travel insurance: Always a good idea during wet season
Final Thoughts
So, what’s the final verdict on Hoi An Vietnam weather in September? It’s not the driest month, but if you’re looking for culture, atmosphere, and fewer crowds, this could be your ideal time. With a good raincoat, open mind, and a taste for cozy travel vibes, September in Hoi An delivers beauty in its own poetic way.
Learn Vietnamese with Jellyfish
At Jellyfish, we help learners go beyond vocabulary.
We offer:
- Vietnamese language courses for all levels
- Cultural training for expats, professionals, and travelers
- Specialized classes on travel phrases, rainy-season vocabulary, and market etiquette
👉👉 Learning Vietnamese – Jellyfish Vietnam
✦ Hotline: 096 110 6466
✦ Head office: 1st Floor, Web3 Tower Building, Alley 4 Duy Tan Street, Cau Giay District, Hanoi
✦ Branch office: Sholega building, 275 Lach Tray, Ngo Quyen, Hai Phong
✦ Head office in Japan: 4F Westhill Building, Nishigotanda 2-24-4, Shinagawa, Tokyo, Japan
