Northern Vietnam climate
Before discussing May’s specific weather, it’s important to understand the general climate of Northern Vietnam. The region follows two main seasons, but it also experiences noticeable temperature variations throughout the year.
- Dry Season: October – April
- Rainy Season: May – September
Beyond just the dry and rainy periods, Northern Vietnam has distinct temperature shifts that make it different from the rest of the country. As a result, travelers can experience cool, hot, or mild conditions depending on the time of year.
- Coldest months: December – February
- Hottest months: June – August
- Mild months: March – May, September – November
Travel Tip: Vietnam’s regions experience different weather patterns. While May brings more humidity and rainfall to the north, the south remains hot with regular rain showers, and central Vietnam begins to see increased temperatures with occasional rainfall.
Weather in North Vietnam in May
May marks the transition from the dry season to the rainy season in northern Vietnam. Temperatures continue to rise, with daytime averages of 25–32°C (77–90°F) in Hanoi and other lowland areas. Nights remain warm, generally between 22–25°C (72–77°F). In the mountains, temperatures also increase but stay cooler compared to the lowlands.
Rainfall rises significantly compared to previous months, with an average of 120–180 mm (4.7–7 inches). The first heavy rains of the year often arrive in May, usually in the form of brief but intense afternoon showers or thunderstorms. While it is not yet the peak of the rainy season, these storms become more frequent as the month progresses. Humidity levels are also high, making the heat feel more intense. May is the beginning of the wet season, though dry and sunny periods still occur between showers.
Rice fields in Northern Vietnam in May
May is one of the most visually stunning months to see rice fields in Northern Vietnam. In the highlands of Sapa and Mu Cang Chai, farmers begin their first rice season, flooding the terraces with water. This creates a mesmerizing mirror effect, reflecting the sky and surrounding mountains.
At the same time, in the valleys of Ninh Binh, Mai Chau, and Pu Luong, the rice fields reach their peak beauty, turning golden as the first harvest of the year begins. Whether you’re trekking in Pu Luong, cycling through Mai Chau, or taking a boat ride in Tam Coc, this is a spectacular time to witness the harvesting in different regions.
Learn more about the best destinations and seasons: northern Vietnam rice fields
Is May a good time to visit Northern Vietnam?
May is a very good month to visit Northern Vietnam, especially for stunning rice field landscapes and lush scenery. The first rice season begins in the mountains, creating beautiful flooded terraces that reflect the sky, while lowland areas like Ninh Binh and Mai Chau turn golden with the spring harvest. Temperatures rise, making it noticeably warmer, but it’s not as hot as the peak summer months. Some rain starts to appear, but it usually comes in short bursts rather than all-day downpours. Trekking is still enjoyable, though it gets hotter, and Halong Bay cruises remain a great option. If you want a mix of cultural experiences, scenic landscapes, and manageable weather, May is an excellent choice.
Best places to visit in May
May marks the transition into the rainy season in Northern Vietnam, but it remains an excellent time to explore, with lush green landscapes, golden rice fields, and comfortable temperatures early in the month. Below, we highlight some of the best destinations to visit this month, focusing on seasonal highlights. For a complete list of must-visit places in Northern Vietnam, check out our full travel guide: North Vietnam Travel Guide.
1. Pu Luong – Best Time for Rice Terraces
May is one of the best months to visit Pu Luong, as the rice terraces reach their peak beauty before the first harvest of the year. The landscape is golden yellow, creating breathtaking scenery. Trekking through the terraced hills and seeing ethnic farmers at work makes for a truly immersive experience. Even though the rainy season is beginning, it is not extreme yet, making it a great alternative to Sapa.
2. Ninh Binh – Golden Rice Fields & Boat Rides
May is one of the best months to visit Ninh Binh, as the rice fields are golden yellow and ready for the first harvest. The Tam Coc boat ride and cycling through the countryside offer stunning views of the vibrant fields. The weather is warm but not extremely hot, with occasional rain showers that make the landscape even more vibrant.
For more details, check out our full guide: Ninh Binh in May.
3. Sapa – Rice Fields Turn to Mirrors
May marks the beginning of rice field preparation in Sapa, as terraces are submerged in water, creating a mirror-like effect that reflects the sky. This unique sight is one of the most beautiful times to visit, despite the start of the rainy season. Trekking is still enjoyable, but expect occasional showers.
For more details, check out our full guide: Sapa in May.
4. Mai Chau – Warm Weather & Harvest Season
Mai Chau in May sees perfect countryside landscapes with golden rice fields reaching their full height. The transition into the rainy season means more chance of rain, but it is still a great time to cycle through the valley and witness the harvest later in the month.
For more details, check out our full guide: Mai Chau in May.
5. Cao Bang – Warmer Weather & Improving Waterfalls
The weather in Cao Bang is getting warmer with increasing chances of rain, though nothing too extreme. One major benefit is that Ban Gioc Waterfall starts looking more impressive, as rainfall helps increase the water flow. Exploring the caves, karst landscapes, and local villages remains a great experience.
For more details, check out our full guide: Ban Gioc Waterfall in May.
6. Halong Bay in May – Warm Weather and Great for Water Activities
May in Halong Bay is warm and mostly dry, though humidity starts to rise. Occasional short rain showers may occur, but they don’t last long. This month is great for swimming, kayaking, and enjoying a cruise, though it’s best to avoid the midday heat. The water is warm, making it one of the most comfortable months for water activities. \n\nFor more details, check out our full guide: Halong Bay in May.
7. Ha Giang – Warmer with Occasional Showers
Ha Giang’s weather in May is getting warmer, with an increasing chance of rain, especially later in the month. The Ha Giang Loop remains an exciting experience, though early May is better for dry conditions. The scenery remains stunning, with vibrant green landscapes.
For more details, check out our full guide: Ha Giang Loop in May.
8. Hanoi – Hotter but Still Good for Exploration
May in Hanoi is getting hotter, but it is still manageable for exploring. Occasional rain showers offer relief from the heat and are easy to wait out in a café or a museum. Reunification Day (April 30) and Labor Day (May 1) may bring some celebrations, adding a festive atmosphere.
For more details, check out our full guide: Hanoi in May.
Events and holidays in May
May in Northern Vietnam is not as packed with festivals as previous months, but there are still two important holidays: International Labour Day, which extends the Reunification Day holiday period, and Buddha’s Birthday, an important religious event. While these holidays do not cause major disruptions, they increase domestic travel and temple activity.
International Labour Day
When: May 1st
Where: Nationwide
International Labour Day is an official public holiday in Vietnam, but it is not heavily celebrated. However, since it follows Reunification Day (April 30th), the two holidays often create a long weekend or an extended public holiday, especially if they fall near a weekend. When this happens, many Vietnamese travel domestically, making popular destinations busier than usual.
While the impact in Northern Vietnam is not as strong, places like Halong Bay, Ninh Binh, and Sapa can still see a rise in domestic tourists. The biggest travel rush happens in central and southern destinations like Dalat, Phu Quoc, Da Nang, and Hoi An.
For more details, check out our full guide: International Labour Day in Vietnam.
Buddha’s Birthday (Vesak)
When: 8th day of the 4th lunar month (usually in May)
Where: Nationwide, with larger celebrations at major Buddhist temples
Buddha’s Birthday, also known as Vesak, is one of the most important Buddhist celebrations in Vietnam. Temples across the country hold ceremonies, prayers, and lantern displays, and some larger temples in Hanoi, Ninh Binh, and other northern regions may have processions and special rituals.
For travelers, this is a good time to visit Buddhist temples to see decorations, religious ceremonies, and a more vibrant temple atmosphere. However, temples may be busier than usual, as many Vietnamese families visit to make offerings.
For more details, check out our full guide: Buddha’s Birthday in Vietnam.
Travel tips for May in North Vietnam
May marks the transition from spring to summer in North Vietnam. The weather gets noticeably warmer, but it’s still manageable before the peak summer heat. Occasional rain showers begin toward the end of the month, but they are usually short. Here’s what you need to know for traveling in May.
- What to bring – Light, breathable clothing is essential, as temperatures rise. A hat, sunglasses, and sunscreen are necessary for daytime activities. Bring a light rain jacket or a compact umbrella for occasional showers, especially toward the end of the month.
- Accommodation – May is still a shoulder season, meaning accommodation prices are reasonable. However, domestic travel picks up toward the end of the month due to summer holidays, so booking in advance is recommended for popular destinations like Hanoi, Sapa, and Ha Long Bay.
- Homestays – The weather is still pleasant enough for a homestay experience in the mountains. Nights are not too cold, and the increasing warmth makes it a comfortable time to stay in a traditional wooden house. Be prepared for basic facilities, as ethnic homestays typically lack air conditioning.
- Outdoor activities – May is a great month for trekking in the northern mountains, as temperatures are warm but not extreme. The first rice terraces begin to turn green in Sapa and Mu Cang Chai. Ha Long Bay and Ninh Binh are also excellent to visit, with sunny days and calm waters for boat trips.
FAQ about traveling in May
How hot is North Vietnam in May?
May is noticeably warmer than April, with Hanoi temperatures ranging from 24–34°C (75–93°F). In the mountains (Sapa, Ha Giang), it’s slightly cooler, ranging from 18–28°C (64–82°F). Humidity increases, making it feel hotter, especially in the cities.
Does it rain a lot in North Vietnam in May?
Rainfall increases, especially toward the end of the month, but it’s not the peak rainy season yet. Hanoi receives around 130mm (5 inches) of rain, usually in short afternoon showers rather than all-day rain. The rain helps cool things down but also increases humidity.
What should I wear in North Vietnam in May?
Lightweight, breathable clothing is essential due to the higher temperatures and humidity. Bring a rain jacket or compact umbrella for sudden showers. If trekking, wear moisture-wicking clothing and sturdy shoes, as some trails may start getting muddy.
Is May a busy travel month in North Vietnam?
May is still shoulder season, meaning it’s not as crowded as summer (June–August). However, domestic tourism starts increasing toward the end of the month due to school holidays. It’s best to book Ha Long Bay cruises and accommodations in advance if visiting late May.
Is May a good time for trekking in Sapa or Ha Giang?
Yes, May is a beautiful month for trekking. The rice terraces are flooded in preparation for planting, creating the famous “mirror-like” effect where the fields reflect the sky. Trails may start getting muddy due to increased rain, so wear proper hiking shoes.
