Ha Long in May welcomes visitors with golden sunshine, clear skies, and gentle sea breezes—the perfect prelude to Vietnam’s summer. As spring transitions into early summer, the bay offers ideal conditions for cruising, swimming, and outdoor exploration without the peak season crowds. Discover why May is one of the most delightful times to explore this iconic World Heritage site.

Weather in Ha Long in May

May marks the seasonal transition between spring and summer, and it’s also when Ha Long’s weather reaches its most beautiful phase of the year. The sky is clear, the sun shines brightly, and the air is warm without being overly intense—making it a perfect time to begin your journey to explore this natural wonder of Northern Vietnam. Average temperatures range from 25 to 32°C, ideal for outdoor activities like swimming, kayaking, or cruising around the bay without the discomfort of extreme heat.

One of the biggest advantages of Ha Long’s weather in May is the low chance of rain, moderate humidity, and calm seas—all favorable conditions for boat tours and cave visits, such as exploring Sung Sot Cave or Thien Cung Cave. Gentle breezes from the sea carry a mild salty scent and the unique comfort of a tropical coast, keeping the atmosphere pleasant even during sunny days.

Moreover, May is not yet part of the peak travel season, so Ha Long remains peaceful and uncrowded. Visitors can enjoy the bay’s beauty, take photos without crowds, and experience hassle-free services. With such ideal conditions, May truly stands out as the perfect time to visit Ha Long—where nature, weather, and tranquility come together to please every traveler.

What makes Ha Long beautiful in May?

Ha Long Bay

Ha Long Bay in May is truly a natural masterpiece, with golden sunshine, calm waters, and vibrant early-summer energy. The weather is warm but pleasant, making it ideal for both relaxation and adventure. This is the perfect time to explore the bay’s majestic limestone karsts, hidden caves, and peaceful floating villages—all before the peak-season crowds roll in.

Join an Overnight Cruise

Hop aboard a traditional junk boat and spend the night on the bay, drifting past towering islets and enjoying onboard experiences like tai chi at sunrise, squid fishing at night, and candlelit seafood dinners under the stars.

Go Kayaking Around Grottos and Lagoons

Explore the bay at your own pace by kayaking through caves and into hidden lagoons, where the water is calm and clear. Popular spots include Luon Cave and Ba Hang village.

Visit Stunning Limestone Caves

Discover otherworldly formations inside Sung Sot Cave (Surprise Cave) or Thien Cung Cave, where stalactites and stalagmites sparkle under soft lighting. May’s mild weather makes cave walking extra comfortable.

Swim at Secluded Beaches

Take a dip in the clear, warm waters at beaches like Ti Top Island, Soi Sim, or remote sandy spots accessible by boat. The sea is calm in May, perfect for swimming and relaxing on the sand.

Ti Top Island

Ti Top Island in May is a sun-kissed paradise perfect for both adventure seekers and beach lovers. The warm, dry weather makes climbing and swimming especially enjoyable, while the sea breeze keeps things refreshing. With fewer crowds than in peak summer, visitors can fully appreciate the island’s white sandy beach, emerald waters, and iconic hilltop viewpoint offering sweeping views of Ha Long Bay.

Hike to the Panoramic Viewpoint

Climb the 400+ stone steps to the summit of Ti Top, where a small platform provides one of the best panoramic views in Ha Long Bay. The climb is moderate, and the reward is unforgettable—especially in the clear skies of May.

Swim and Sunbathe on the Beach

Relax on Ti Top’s crescent-shaped beach, known for its clean, soft sand and gentle waves. The warm water in May is perfect for a refreshing dip or floating in peace with a view of the karsts.

Capture Sunrise or Sunset Photos

May offers beautiful golden hours, especially at sunrise and sunset. The top of the island or even the beach itself is a wonderful place for stunning, frame-worthy shots of the bay drenched in light.

Sung Sot Cave 

Sung Sot Cave in May offers a comfortable and captivating experience for visitors. With dry weather and mild humidity, it’s the perfect time to wander through this spectacular limestone cave without the discomfort of crowds or heat. Nestled on Bò Hòn Island, Sung Sot is one of the largest and most beautiful caves in Ha Long Bay, famous for its vast chambers, colorful lighting, and dramatic rock formations shaped like animals and people.

Walk Through Two Majestic Chambers

Explore the two main chambers of the cave—the first narrow and modest, the second unexpectedly vast and soaring. The sudden “surprise” of the massive second chamber is.

Hike the Trail Leading to the Entrance

Before entering the cave, enjoy a short uphill hike through lush greenery. In May, the trail is dry and surrounded by vibrant tropical plants — making the approach just as scenic as the cave itself.

Enjoy the Quiet Morning or Late Afternoon Tours

Book your visit for early morning or late afternoon, when the cave is less crowded, the light is softer, and the temperature inside is more pleasant. You’ll have more time and space to explore at your own pace.

Bài Thơ Mountain

Núi Bài Thơ is one of the best-kept secrets for panoramic views of Ha Long Bay. In May, the weather is ideal for an early morning or late afternoon hike—skies are clear, the air is warm but not scorching, and the breathtaking scenery is amplified by golden light. As you ascend, Ha Long’s cityscape slowly fades, revealing a 360-degree view of limestone karsts, blue sea, and floating boats. Though currently access may be restricted, for those able to visit (with local permission), it’s an unforgettable highlight of the trip.

Hike to the Mountain Peak

Climb the steep trail to reach the summit, where a small lookout offers panoramic views over the entire bay. The path is rugged but short, and the reward is a quiet, stunning perspective that few tourists see.

Capture Scenic Photos at Sunrise or Sunset

In May, both sunrise and sunset offer soft, golden light. Photographers and nature lovers can capture sweeping shots of Ha Long Bay, framed by lush green trees and shimmering waters.

Discover Historical Poem Inscriptions

The mountain is named after a poem carved into the cliffside by King Lê Thánh Tông in the 15th century. While hiking, keep an eye out for ancient script etched into the rock, a rare cultural relic linking history and nature.

Escape the Tourist Crowds

Unlike the popular boat tours, Poem Mountain offers a peaceful and personal escape. You’ll often find yourself completely alone with the view — perfect for quiet reflection or a romantic spot.

Ha Long Night Market 

One of the most delightful and authentic experiences when visiting Ha Long in May is exploring the night market. Located in the Bai Chay area, Ha Long Night Market opens from around 6 PM until late and is a favorite hangout for both tourists and locals.

The market brims with coastal charm, offering a wide array of local specialties like grilled squid patties (chả mực), sun-dried squid, dried peanut worms (sá sùng), and seafood-flavored snacks and sweets. It’s not just a place to buy souvenirs—it’s also an opportunity to explore the region’s food culture. Many vendors even let you sample before purchasing, making for a relaxed and friendly atmosphere.

Beyond food, the market also sells fashion items, handicrafts, and souvenirs featuring Ha Long Bay at reasonable prices. The lively energy, glowing lights, and cheerful vendor calls create a vibrant local vibe.

After a long day of sightseeing, wandering these bustling alleys, savoring a freshly grilled squid skewer, or sipping an icy lemon tea is the perfect way to unwind—a memorable highlight of any May trip to Ha Long.

Must-Try Food in Ha Long in May

Chả Mực (Squid Cake)

No culinary journey through Quảng Ninh is complete without chả mực (grilled squid patties)—a local specialty that has earned nationwide fame. What makes this dish truly special isn’t just the use of fresh, carefully selected cuttlefish, but the traditional hand-pounding method that gives the patties their signature texture.

Each golden piece is crispy on the outside, chewy inside, and bursting with rich, ocean-fresh squid flavor. Chả mực can be enjoyed in various ways: paired with steamed rice rolls (bánh cuốn), sticky rice (xôi trắng), or simply dipped in chili sauce as a snack. It’s also a top pick for souvenirs, as it freezes well while maintaining its original taste and texture—making it a flavorful gift from the sea.

Nem Chua – Nem Chạo Quảng Yên (fermented pork roll)

Though not as famous as chả mực, nem chua and nem chạo from Quảng Yên are beloved staples among locals when it comes to Halong’s street food. Originally from Quảng Yên town—about 20 km from central Halong—these dishes are now easily found across the city’s food stalls and night markets.

Nem chua is made from naturally fermented raw pork, wrapped in guava and banana leaves, giving it a tangy, refreshing flavor. Nem chạo, on the other hand, is a DIY-style mix featuring shredded pork skin, roasted rice powder (thính), shredded green papaya, and herbs, all enjoyed with crispy rice crackers and sweet-sour dipping sauce. Bold in taste yet humble in form, these bites offer an authentic taste of Quảng Ninh’s culinary soul.

Cù Kỳ (Stone Crab)

Cù kỳ is a lesser-known crustacean that looks similar to a crab but stands out with its oversized claws and firmer, sweeter meat. Unlike the more common ghẹ or roe-filled crabs, cù kỳ is often considered a “local’s delicacy” in Halong, mostly found at long-standing seafood restaurants rather than tourist eateries.

Its meat is rich and flavorful, making it perfect for a variety of dishes like bún cù kỳ (noodle soup), cháo cù kỳ (rice porridge), or stir-fried with tamarind or salt. Each preparation delivers a satisfying, hearty taste. Visiting Halong in the summer? This seasonal treat is not only tasty but also budget-friendly—especially at eateries near the fishing ports.

 Cháo Trai (Clam Rice Porridge)

Think clams are only good for producing pearls? Think again. In Halong, cháo trai (clam porridge) is a must-try for anyone looking to dive deeper into local flavors beyond the more famous dishes. Unlike its cousin cháo hà (oyster porridge), this dish is made with fresh sea clams, giving the porridge a rich, oceanic depth.

Cooked slowly until smooth and savory, the rice soaks up the clam essence beautifully. Topped with chopped Vietnamese coriander (ngò tàu), crispy shallots, and a sprinkle of green onions, each spoonful is warm, fragrant, and comforting. Whether for breakfast or a light evening meal, cháo trai is a quiet star in Halong’s seafood scene.

Nộm Sứa (Jellyfish Salad) 

Jellyfish might be a familiar ingredient in many seaside towns, but nộm sứa in Halong Bay brings its own distinct twist. After being thoroughly cleaned, the jellyfish is tossed with shredded green papaya, fresh herbs, roasted peanuts, crispy shallots, and a tangy-sweet dressing that ties everything together.

This dish is especially popular during the hot summer months for its light, crunchy texture and cooling flavors. Some local eateries even add thin slices of boiled pork belly for a rich, savory contrast. Whether served as an appetizer or a midday snack, nộm sứa is a true taste of Halong’s refreshing cuisine.

Tips for Traveling to Ha Long in May 

Book Cruises and Hotels in Advance if Traveling Around the Holiday

Ha Long in early May often coincides with Vietnam’s Reunification Day and Labor Day (April 30–May 1), leading to a spike in domestic tourism. If your trip falls during this time, it’s essential to book your Ha Long Bay cruise and accommodation early to avoid limited options or inflated prices. Many popular overnight cruises and beachfront resorts fill up weeks in advance.

Pack Sun Protection and Comfortable Essentials

The sunshine in May can be intense, especially during midday. Be sure to bring sunscreen, a wide-brimmed hat, sunglasses, and a light sun jacket. Also, pack comfortable footwear for hiking or walking tours and carry your own water bottle to stay hydrated during outdoor excursions.

Avoid Tight Schedules in Case of Sudden Showers

While May is generally warm and sunny, occasional rain showers can still pop up unexpectedly. To avoid stress or missed activities, don’t pack your itinerary too tightly. Allow buffer time between tours or activities in case of weather-related delays.

Choose Flexible Tours with Indoor Options

For added peace of mind, opt for tours with flexible itineraries that include both indoor and outdoor activities. Cruises or guided tours that feature cave visits, museum stops, or cooking classes onboard are great choices—ensuring you still have fun even if the weather turns rainy.

FAQs – Ha Long in May

Is May too hot to visit Ha Long Bay?

No, May is warm but still pleasant. Average temperatures range from 26 to 32°C, making it ideal for beach time, cruises, and sightseeing. Just make sure to wear sunscreen and stay hydrated during midday excursions.

Can I swim in Ha Long Bay in May?

Yes, May is one of the best months for swimming in Ha Long Bay. The sea is calm and comfortably warm, perfect for taking a dip at places like Ti Top Beach or during cruise stops at secluded lagoons.

Is it the rainy season in May?

Not quite. Rainfall starts to increase in May, but it’s usually in the form of brief, scattered showers that don’t last long. Most activities go on as planned, and skies remain mostly clear and sunny.

Are cruises and tours still available in May?

Absolutely. May is part of the early tourist season, so all cruises, day trips, and tours operate normally. It’s a great time to book an overnight cruise or go island-hopping, with fewer crowds than peak summer.

What should I pack for Ha Long in May?

Pack light clothing, sun protection (hat, sunscreen, sunglasses), a light rain jacket for unexpected showers, comfortable shoes for exploring caves or trails, and a swimsuit for beach and water activities.

Why Ha Long in May Is Your Ideal Early-Summer Escape

Ha Long in May captures the charm of early summer—golden sunshine, calm waters, and just the right balance between serenity and liveliness. Before the peak season crowds arrive, this is your chance to enjoy a peaceful cruise, swim in clear seas, and explore natural wonders in comfort. Whether you’re after adventure or relaxation, May offers the perfect backdrop for it all. Plan your golden getaway to Ha Long this May — and let the bay’s magic unfold at your own pace