Climate and region of Hoi An
Hoi An is located in Central Vietnam, close to Da Nang and Hue, meaning it shares a similar weather pattern with these cities. The region has a tropical monsoon climate, which is divided into two seasons:
- Dry season (February – August): Characterized by hot temperatures, low rainfall, and mostly sunny days. The first half of August is still part of the dry season, but by September, the shift toward wetter conditions begins.
- Rainy season (September – January): Brings higher humidity, more frequent rain, and occasional storms. The rainy season in Hoi An starts in September, but its intensity increases in the following months.
Unlike northern and southern Vietnam, where the rainy season lasts for months, Central Vietnam follows a different pattern. For example, in September, Hoi An is just entering its rainy season, while Hanoi and Ho Chi Minh City have already experienced several months of wet conditions by this time.
Weather in Hoi An in September
September is the official start of the rainy season in Hoi An, meaning rain becomes more frequent, and humidity remains high. However, it does not rain all day, and visitors can still expect some dry and sunny periods, especially in the mornings.
- Average temperature: 27°C (81°F)
- Daytime highs: 30–32°C (86–90°F)
- Nighttime lows: 23–25°C (73–77°F)
- Rainfall: 250 – 350mm, with rain on 15–20 days of the month
- Humidity: 85–90%, making it feel hotter and more humid
- Sunshine: 4–6 hours per day, often with clearer skies in the morning and rain in the afternoon or evening
Although September is the start of the wet season, most rain comes in short but heavy showers, rather than continuous downpours. This means that while travelers should expect frequent rain, there will still be dry windows to explore.
Beach holiday in Hoi An in September
September is not the best time for a beach holiday in Hoi An, as it marks the beginning of the rainy season. While the first half of the month may still have some sunny days, rain showers become more frequent as the month progresses. The sea also becomes rougher, with stronger currents and waves, making swimming conditions less ideal compared to previous months.
Although temperatures remain warm, humidity levels rise, making the air feel hot and sticky. Sunbathing is still possible when the weather allows, but the increased chance of rain and cloud cover means the beach experience is unpredictable.
Is Hoi An worth visiting in September?
Despite the increasing rain, Hoi An is still a worthwhile destination in September, especially for travelers interested in its historic old town, cultural experiences, and food scene. Unlike a beach-focused destination where poor weather can limit activities, Hoi An remains enjoyable even in the rain, as visitors can explore its markets, cafes, temples, and tailor shops with just an umbrella or poncho.
The rain in September is usually intermittent, meaning it does not last all day, and mornings are often dry. This allows visitors to explore ancient streets, countryside villages, and cultural sites before any afternoon showers begin. Crowds are also smaller than in peak summer, making it a relaxing time to experience Hoi An without the tourist rush.
The only downside is that the beach is not as enjoyable due to unpredictable weather and rougher sea conditions. If you are planning a trip to multiple destinations in Vietnam, you may want to spend fewer days in Hoi An and add a southern beach destination for better weather.
Best things to do in Hoi An in September
September in Hoi An is a transitional month, bringing more frequent rain showers while still offering some dry periods, especially in the mornings. While the beaches may not be at their best, the town’s cultural attractions, river experiences, and hands-on activities remain enjoyable. Visitors should plan outdoor activities early in the day and be prepared for short, heavy rain showers in the afternoon or evening.
Hoi An when it rains
Since September is part of the rainy season, travelers shouldn’t be discouraged by the possibility of showers. Rain in Hoi An is usually short but intense, and there are still plenty of ways to enjoy the town. For detailed tips on the best things to do on rainy days, check out this guide: What to do in Hoi An when it rains
1. Walking through the old town
Hoi An’s ancient town is beautiful in any weather, with lantern-lit streets, historic houses, and a riverside setting. While September can bring rain showers, mornings are often dry and pleasant, making it the best time for exploring on foot. Even if it rains, just grab an umbrella or raincoat—the old town remains just as charming.
2. Boat trip over the Thu Bon River
A boat trip along the Thu Bon River offers a peaceful way to experience Hoi An’s scenic countryside and riverside villages. Many boats have covered roofs, making it a great activity even if it rains. Stops along the way often include local craft villages, where visitors can see traditional pottery-making and silk weaving.
3. Join a cooking class
Cooking classes in Hoi An are a perfect activity for a rainy day, combining hands-on learning with a delicious meal. Many classes include a visit to the local market to buy fresh ingredients, and some offer bike rides to organic vegetable farms—which can still be fun in light rain. If the weather is too wet, travelers can skip the outdoor activities and focus on cooking indoors.
4. Create some tailor-made clothing
Hoi An is famous for its tailors, making it one of the best places in Vietnam to get custom-made suits, dresses, and shoes. Since fittings take a few days, September’s occasional rain showers provide a great excuse to spend time indoors selecting fabrics and getting measured. If a sudden downpour starts, stepping into a tailor’s shop is a great way to wait out the rain.
5. My Son day trip
A half-day trip to My Son Sanctuary is still possible in September, but starting early in the morning is best to avoid the higher chance of rain later in the day. The ancient Cham ruins are surrounded by lush jungle, making them even more atmospheric in misty or cloudy weather. Since the site has limited shelter, it’s a good idea to bring a light rain jacket just in case. More details about My Son can be found here.
Events and festivals in September
Vietnam National Day – September 2
Vietnam National Day commemorates the country’s independence from French colonial rule in 1945. This is one of the biggest national holidays in Vietnam, after Tet and Reunification Day, and it is a time of patriotic celebrations, flag displays, and gatherings.
Hoi An becomes busier for a few days, as domestic tourists travel for a short holiday. While there are no large parades or major events in town, travelers can expect a lively atmosphere, with more Vietnamese tourists, flag decorated streets, and some small celebrations in bars and restaurants.
Mid-Autumn Festival
The Mid-Autumn Festival (Tết Trung Thu) is a traditional Vietnamese celebration for families and children, filled with lantern displays, mooncakes, and festive gatherings. Taking place on the full moon of the 8th lunar month, the festival sometimes falls in late September or early October.
In Hoi An, the old town becomes even more magical, with colorful lanterns, families strolling the streets, and an energetic, joyful atmosphere. While the Mid-Autumn Festival is more focused on children and family gatherings, visitors can still enjoy the beautiful night scenes, dragon dances, and street performances.
Lantern Festival
The Hoi An Lantern Festival takes place every full moon, when the town turns off its electric lights, and the streets glow with the warm light of thousands of traditional lanterns. Unlike other festivals, there are no additional celebrations, so visitors don’t need to plan their trip specifically around the full moon—Hoi An’s lanterns are lit every night, creating a similar ambiance throughout the month.
For the exact date of this month’s Lantern Festival, check here: Hoi An Lantern Festival
Travel tips for September in Hoi An
September in Hoi An is the start of the rainy season, but temperatures remain warm and humidity is high. Rain showers become more frequent, especially in the afternoons, but the mornings are often dry and suitable for sightseeing. Since Vietnam National Day (September 2nd) brings a short period of domestic tourism, travelers should be aware of a temporary increase in crowds and hotel demand.
What to bring
Packing for September requires a combination of warm-weather clothing and rain protection, as the month still has hot temperatures but also frequent showers.
- Lightweight, breathable clothing – The humidity makes it feel warmer, so opt for cotton or linen.
- Sunscreen, hat, and sunglasses – There are still many sunny hours, especially in the mornings.
- A small umbrella or light rain jacket – Afternoon rain showers are common but usually short.
- Comfortable waterproof shoes – Streets may get wet, and sandals or quick-dry shoes are useful.
- A reusable water bottle – Staying hydrated is important due to the heat and humidity.
Accommodation availability
September is part of the shoulder season, meaning fewer tourists than in the summer months, but with a small increase in domestic travelers during Vietnam National Day (September 2nd).
- Hotels and homestays in the old town are generally available, but it’s best to book in advance if visiting around Vietnam National Day, as domestic travelers may cause a brief spike in demand.
- Beach resorts are less crowded, but due to the rainy season, some travelers may prefer accommodations closer to the old town for convenience.
- Overall, prices start to drop compared to the high season, making September a good time to find deals on hotels and tours.
