Hanoi Weather and Temperature in May: Complete 2025 Travel Guide

A Detailed Overview of Hanoi Weather & Temperature in May

Hanoi Weather And Temperature In May

Average temperature (day & night)

In May, Hanoi’s daytime temperatures typically reach around 31 – 32 °C, creating a noticeably warm and sometimes oppressive midday heat. Nights offer some relief, cooling to about 24 – 25 °C, though the humidity means it can still feel warm.

Early mornings are often the most pleasant time for sightseeing, with softer sunlight and cooler breezes, while late afternoons become comfortable again after the day’s peak heat subsides. Light, breathable clothing is a must, along with sun protection. If you want to stay updated, check the 7-day forecast widget for the most accurate and current temperature trends before planning your activities.

May Weather Averages In Ha Noi

Rainfall statistics

May is one of the wetter months in Hanoi, bringing approximately 150 - 190 mm of rain across 14 – 18 days. Showers often arrive suddenly and can be heavy, especially in the afternoons, sometimes accompanied by lightning and brief flooding in low-lying streets.

While these rains can interrupt outdoor plans, they also bring a refreshing coolness and leave the city’s greenery looking vibrant and freshly washed. Travelers should carry a compact umbrella or light raincoat at all times. Historic 2025 weather data shows consistent patterns of thunderstorms and mist throughout the month, making flexible scheduling essential for a smooth trip.

Rainfall Graph (mm)

Humidity levels

Humidity in Hanoi during May remains consistently high, often exceeding 80%. This combination of warmth and moisture can create a muggy, heavy atmosphere, particularly in the middle of the day. Even in the evenings, the air can feel dense, making light fabrics like cotton or linen the best choice.

While the lush greenery and flowering trees are a beautiful byproduct of this climate, the humidity may take a toll on travelers unused to tropical weather. Staying hydrated, taking regular indoor breaks, and avoiding prolonged activity under direct sunlight will help you enjoy the city more comfortably.

Humidity Graph (%)

Air quality and UV index

Although May’s rainfall can help reduce dust in the air, high humidity and heat sometimes contribute to lower air quality in Hanoi. Average PM2.5 levels can hover around 15 µg/m³, about three times higher than the WHO annual guideline, with occasional spikes on still, hot days.

Pollution levels fluctuate depending on wind patterns and urban activity, so checking an app like AirVisual is recommended before spending long hours outdoors. The UV index during midday often reaches 7–9 (high to very high), meaning sunburn can occur in as little as 15–20 minutes without protection. A wide-brimmed hat, sunglasses, and SPF 30+ sunscreen are essential for safe exploration, and when AQI is elevated, consider limiting strenuous outdoor activity or wearing a quality mask to filter fine particles.

Typical weather patterns

Hanoi’s May weather is marked by sudden, intense afternoon or evening downpours, often accompanied by dramatic thunderstorms. These showers can last from just a few minutes to over an hour, quickly transforming sunny streets into glistening, rain-washed scenes.

Mornings tend to be clearer and slightly cooler, making them ideal for outdoor activities. Evenings often see a drop in temperature and humidity, creating a pleasant atmosphere for night markets or lakeside strolls. Misty conditions are not uncommon after heavy rain, giving the city an almost cinematic quality - perfect for photographers seeking moodier shots of Hanoi’s historic streets.

Is May a Good Time to Visit Hanoi, Vietnam?

Yes, May is a good time to visit Hanoi if you don’t mind a bit of heat and humidity. While temperatures are warm, they are still lower than in the peak summer months of June and July, and afternoon showers often bring a refreshing cool-down. By planning outdoor sightseeing for early mornings or late afternoons and enjoying indoor attractions at midday, you can make the most of your trip.

May is also part of Hanoi’s off-peak travel season, which means lower prices for flights, hotels, and activities. Tourist sites are less crowded, allowing for a more relaxed and personal experience. With lush green scenery, lively local festivals, and excellent customer service, May offers both charm and value for travelers.

Things to Do in Hanoi: Perfect for Weather in May

There are many things to do in Hanoi in May let's learn the best one below.

Enjoy Peaceful Moments on the Streets

May is the season of flamboyant flower, a kind of red flower, and purple Lagerstroemia flower. Walking along the Hanoi streets in the afternoon, listening to the sound of cicadas is one of the great things to do in Hanoi in May. This meaningful moment can let your mind rest, forget the busy life, and enjoy peaceful moments.

Enjoy Peaceful Moments On The Streets With Red Flamboyant Flower

Refresh at Ho Tay Water Park

Ho Tay water park is a perfect escape from the heat of May. The water park is a modern entertainment complex where you will find water attractions like pools, slides and a lazy river… Dozens of games for adults, youngsters, and even children varying from thrilling games namely high-speed train, dropping down from height to the games for kids like driving carts, bubble house, bumping cars… are available for you and your families to choose.

Ho Tay Water Park Best Choice For Families With Kids (Source: Hotaypark.fanpage)

Stroll Through Hanoi Streets at Night

Hanoi is known as a busy city at night. Many night activities happen during the nights, especially around Hanoi Old Quarter. The heat during day time prevents people from explore Hanoi, but when the night falls, many people find cool places to enjoy the wind blowing through. Strolling on the street at night becomes favorite thing to do in Hanoi. Ta Hien street is very crowded at night as a lot of tourists come here to drink Cold beer, hang out with friends, or find the new one.

Drink Cold Beer At Crowded Ta Hien Street

Explore the Temple of Literature in the Soft Morning Light

The Temple of Literature is one of Hanoi’s most treasured historic sites, and visiting early in the day lets you enjoy it at its most peaceful. The cool morning air and soft sunlight filtering through ancient trees create a calm, almost meditative atmosphere.

Without the usual tour crowds, you can take your time exploring the courtyards, stelae of doctors, and traditional Vietnamese architecture. In May, the lush gardens and lotus ponds are especially vibrant after the occasional rain. It’s an ideal way to start your day before the heat sets in.

Explore The Temple Of Literature In The Soft Morning Light

Sip Egg Coffee in a Cozy Café Amid Sudden Showers

May in Hanoi often brings quick, dramatic showers that turn bustling streets into glistening, rain-washed scenes. These moments are perfect for retreating into a cozy café and savoring the city’s famous egg coffee—a velvety blend of robust coffee topped with a rich, creamy froth.

As the rain patters against the windows, you can relax, watch the city slow down, and sample local pastries or desserts. Many cafés in the Old Quarter offer charming interiors that feel warm and inviting on rainy afternoons. It’s a simple pleasure that turns unpredictable weather into a memorable experience.

Sip Egg Coffee In A Cozy Cafe Amid Sudden Showers

Evening Cyclo Ride through the French Quarter

When the sun sets and the heat of the day fades, Hanoi’s French Quarter takes on an elegant charm. Riding a cyclo - Hanoi’s traditional three-wheeled bicycle taxi—lets you experience this district at a leisurely pace.

The grand colonial buildings, softly lit by yellow streetlights, exude a romantic, old-world atmosphere. Gentle evening breezes make the ride refreshing, and your driver can point out landmarks and share stories about the area’s history. It’s a relaxing way to end the day, soaking in the city’s beauty without breaking a sweat.

Evening Cyclo Ride Through The French Quarter

Events & Festivals in May

In May, Hanoi comes alive with cultural and spiritual celebrations such as the Giong Festival, Vesak, the Hanoi Tourism Festival, and President Ho Chi Minh’s Birthday, offering visitors a vibrant mix of traditions, performances, and local experiences.

• Le Hoi Giong (Giong Festival)

Held on the 9th day of the 4th lunar month, Giong Festival is one of Hanoi’s most significant traditional festivals. It honors Saint Giong, a legendary hero who defended the country against invaders. Visitors can witness elaborate rituals, processions, and folk performances that showcase Vietnam’s rich cultural heritage.

• Hanoi Tourism Festival

Taking place from 30 May to 1 June at the Thăng Long Heritage Conservation Center, the Hanoi Tourism Festival is a lively celebration of the city’s culture and hospitality. The event features craft exhibitions, traditional music and dance, and a variety of street food stalls. It’s a perfect opportunity to experience Hanoi’s vibrant atmosphere in one place.

• Vesak (Lord Buddha’s Birthday)

Celebrated in early May, Vesak is one of the most important Buddhist events of the year. Temples across Hanoi are beautifully decorated with lanterns, flowers, and banners, creating a festive yet spiritual atmosphere. Ceremonies include prayers, processions, and offerings to commemorate the birth, enlightenment, and death of Lord Buddha.

• President Ho Chi Minh’s Birthday (19 May)

On 19 May, Vietnam honors the birth of President Ho Chi Minh with nationwide commemorations. In Hanoi, visitors can join memorial activities, exhibitions, and cultural performances dedicated to his life and legacy. Many people visit the Ho Chi Minh Mausoleum to pay their respects during this meaningful day.

Best Summer Dishes in Hanoi in May

In May, Hanoi’s summer food scene shines with refreshing treats and light meals such as tao pho, nostalgic Kem Trang Tien ice cream, colorful che thap cam, and bun rieu, each offering a delicious way to beat the heat.

• Tao Pho (silky tofu pudding with ginger syrup) – ~₫20,000 (≈ $0.80)

This light, silky dessert is served with a fragrant ginger syrup that’s both refreshing and soothing. Perfect for cooling down on a hot May afternoon, it’s a beloved street treat in Hanoi.

• Kem Trang Tien (classic Hanoi ice cream) – ~₫15,000 (≈ $0.60)

A nostalgic favorite, Kem Trang Tien is creamy yet light, with flavors that have delighted locals for decades. It’s best enjoyed while strolling the streets on a warm evening.

• Che Thap Cam (mixed sweet dessert soup) – ~₫25,000 (≈ $1.00)

This colorful dessert combines chilled beans, jellies, and coconut milk for a sweet, textural treat. Served over ice, it’s an instant refreshment in the summer heat.

Che Thap Cam (Mixed Sweet Dessert Soup) A Must Try Local Specialities

• Banh Cuon (Steamed Rice Rolls) – ~₫30,000 (≈ $1.20)

Delicate steamed rice rolls filled with minced pork and wood ear mushrooms make for a light yet flavorful meal. They’re usually served with fresh herbs and a tangy dipping sauce.

• Bun Rieu (Crab Noodle Soup) – ~₫40,000 (≈ $1.60)

This tangy crab noodle soup offers a rich broth balanced with fresh herbs and a hint of tomato. It’s hearty yet refreshing, making it perfect for Hanoi’s humid May days.

Savor Bun Rieu Cua (Crab Noodle Soup) With Rich Broth

Practical Travel Advice for Visitors

• Plan outdoor activities for early mornings or late afternoons to avoid the intense midday sun and heat.
• Always carry a refillable water bottle, wet wipes, and wear a wide-brimmed hat or cap when walking around the city.
• Use the hottest hours of the day to visit indoor spots like museums, cultural centers, or cozy cafés where you can rest and escape the heat.
• Don’t hesitate to stop by local street vendors for Tra Da (iced tea) or Nuoc Mia (sugarcane juice) - affordable, refreshing drinks that are perfect for cooling down.
• Regularly check air quality using apps like AirVisual; if the AQI is high, minimize outdoor exposure or wear a fine dust mask to protect yourself from pollution.

Common Questions on Hanoi in May

What should I wear when visiting Hanoi in May?

Wear light, breathable clothes made of cotton or linen, and comfortable shoes for walking. It’s also wise to carry a rain poncho or umbrella to prepare for sudden afternoon showers.

Is air quality an issue in May?

Humidity and heat can sometimes cause haze and reduce air quality. It’s important to monitor the AQI and limit outdoor activities if pollution levels rise.

Can I do day trips from Hanoi in May?

Yes, places like Ninh Bình, Ba Vì, and traditional craft villages are great options for day trips. Just plan your outings to avoid the heaviest rain periods in the afternoon.

How crowded is Hanoi in May?

Hanoi is generally less crowded in May compared to the busy spring months. This means better prices and a more relaxed, authentic experience for visitors.

How is the weather in Hanoi different between May and June?

June typically brings hotter temperatures and more intense, frequent rains as the monsoon sets in. May is milder and has a slower transition into the rainy season, making it easier to enjoy outdoor activities.

May in Hanoi may be hot and humid, but it offers lush beauty, cultural vibrancy, and fewer tourists. With smart planning - embracing early mornings, refreshing local treats, and festival celebrations - you’ll find a season full of character and warmth. Start planning your May adventure today and book your stay to experience Hanoi’s living charm firsthand!