Titop island Halong Bay

Best time to visit Halong Bay, season & other weather related issues.

Halong Bay Weather Overview

Dotted with nearly 2,000 emerald-rimmed limestone pillars rising from jade-green waters, Halong Bay tops the bucket lists of countless travelers. Unlike Southern Vietnam, a land of eternal summer and wet-dry monsoons, northern Vietnam boasts four distinct seasons. And Ha Long Bay reflects this rhythm, offering unique charm in each chapter.

But when to embark on this once-in-a-lifetime cruise? The answer, like most travel queries, isn’t one-size-fits-all. Your perfect season may depend on juggling work schedules, school breaks, or finding that trusty colleague to hold down the fort. Yet, knowing what each season offers can illuminate your path.


The lowest temperature13°C15°C18°C
The highest temperature26°C30°C34°C


The lowest temperature18°C29°C30°C
The highest temperature36°C40°C40°C


The lowest temperature28°C26°C28°C
The highest temperature40°C37°C36°C


The lowest temperature21°C19°C12°C
The highest temperature36°C34°C27°C

4 seasons in Halong Bay

Spring (March – April):

  • Pleasant weather: Escape the winter chill and dive into the mild embrace of spring, with average temperatures ranging from 20°C to 25°C and low humidity.
  • Sunny skies: Bask in the warm sunlight and enjoy clear skies, perfect for sightseeing and outdoor activities like kayaking or exploring hidden coves.
  • Fewer crowds: Spring is the shoulder season, offering a welcome respite from the peak tourist months. Enjoy the serenity of the bay without battling throngs of visitors.
  • Ideal for photography: The clear skies and vibrant greenery create a photographer’s paradise, capturing the essence of Halong Bay in its spring glory.
Explore Halong Bay by kayak
Explore Halong Bay by kayak

Summer (May – September):

  • Monsoon season: Embrace the lushness of the bay as rainfall brings life to the surrounding karst formations. However, be prepared for occasional downpours, especially in July and August.
  • Reduced prices: Take advantage of lower hotel and cruise rates during the off-season. Score amazing deals and save on your dream Halong Bay vacation.
  • Refreshing water activities: Beat the heat by indulging in water sports like swimming, snorkeling, and diving. The emerald waters offer a cool escape from the summer sun.
  • Unique experience: Witness the dramatic beauty of the bay during storms, with towering waves and dramatic skies creating a spectacle worth remembering.
Enjoying the sunset at Halong Bay.
Enjoying the sunset at Halong Bay.

Autumn (October – November):

  • Golden season: Bid farewell to the summer heat and welcome the crisp autumn air, with temperatures ranging from 18°C to 23°C.
  • Sunny days with occasional drizzle: Enjoy mostly sunny skies with the occasional refreshing shower, keeping the landscape lush and vibrant.
  • Peak season crowds: Be prepared for an influx of tourists, especially during October and November. Book your accommodations and cruises in advance for a hassle-free experience.
  • Festive atmosphere: Immerse yourself in the joyous celebrations of Tet Trung Thu (Mid-Autumn Festival) in September, a vibrant cultural experience.

Winter (December – February):

  • Cool and misty: Embrace the cozy charm of winter, with temperatures averaging 15°C to 20°C and frequent mist and fog creating an ethereal atmosphere.
  • Festive spirit: Experience the bustling energy of the Lunar New Year (Tet) festivities in February, a chance to witness Vietnamese traditions and customs.
  • Layered clothing essential: Pack warm clothes and light jackets, as the cool breeze can be deceiving, especially when sailing on the bay.
  • Magical scenery: The misty air lends an otherworldly charm to the limestone formations, creating a fairytale-like backdrop for your Halong Bay adventure.
MonthTemp (°F)Temp (°C)Rainfall (mm)
 Average DailyAverage DailyAverage Monthly


The best time to visit Halong Bay

For weather-conscious travelers, spring and autumn (March, April, September, and October) offer the most idyllic conditions for a Halong Bay tour. Expect mild temperatures, clear skies, and ideal activity levels.

Let’s see what would be the weather like in this time

Exciting experience when paddling a bamboo boat on Ha Long Bay
Exciting experience when paddling a bamboo boat on Ha Long Bay

March – April:

  • Bathed in sunshine and balmy breezes, Halong Bay blossoms in March and April. While occasional sprinkles might grace the day, clear skies dominate, and crowds remain scarce. Embrace the delightful weather and serene solitude – it’s the perfect time to experience Halong Bay’s charm.

September – October:

  • Autumn paints Halong Bay in warm hues of golden sunshine and gentle winds. Escape the summer’s swelter and bask in the season’s moderate temperatures. Crystal-clear skies and a lull in domestic tourism guarantee tranquil adventures amidst breathtaking landscapes. It’s simply the best time to witness Halong Bay’s splendor.
Mountain Climbing Experience
Mountain Climbing Experience

Other seasons & times for Halong Bay

January – February:

  • Embrace the Chill: Brace yourself for cool, foggy weather with limited visibility. But hey, that’s the price of witnessing Halong Bay’s most vibrant festivals, like the iconic Tet! Pack some layers and don’t miss the festive buzz.


  • Early Bird Catches the Deals: Welcome the summer breeze in northern Vietnam! Temperatures rise, skies are partly cloudy, and Halong Bay cruises plummet in price. Just avoid the crowded Independence Day (April 30) and Labour Day (May 1) rush.

June – August:

  • Sizzle and Soak: Get ready for sizzling sunshine and a splash of rain showers. Typhoons can be a wild card, especially in August, the hottest and wettest month. Expect bustling tourist spots, particularly beaches, as locals flock for their summer break. Check the weather & cancellation scenarios in the next part.

November – December:

  • Cool and Crisp with a Chance of Sunshine: Crisp air, cloudy skies, and the occasional ray of sunshine paint the winter landscape. Pack warm clothes and a rain jacket, or grab them locally at a steal. Embrace the quiet charm of Halong Bay during this winter season.
Halong Bay sunset
Halong Bay sunset
titop island in halong bay ( source: @ShannBiglione)
titop island in halong bay ( source: @ShannBiglione)

Peak Season in Halong Bay

November, December, and January wear the crown of peak season, their reign adorned with Christmas lights and New Year’s fireworks. However, October, with its crisp autumn air, February’s romantic Valentine’s Day, March’s spring renewal, and April’s blossoming gardens, also lure travelers in droves.

The peak season for domestic tourists is from May to Aug, summertime in Halong Bay. Many family with children & travelers wants to have a beach & sea holiday this time so Halong Bay is busy, especially visiting sites such as Titop Island, Luon Cave, Sung Sot Cave…

Experience a bamboo boat tour to admire Ha Long Bay
Experience a bamboo boat tour to admire Ha Long Bay

Low Season in Halong Bay

The period spanning from May to September is often regarded as the off-peak season for international travelers visiting Halong Bay. Alongside the radiant sun, ideal for water-based activities, the serene beaches and numerous cruise promotions present compelling reasons to plan your holiday during this timeframe. If you choose to visit Ha Long Bay between July and August, there is a possibility of occasional typhoons, which could lead to trip cancellations or delays. Generally, these storms and typhoons are relatively small and short-lived, lasting around 2 or 3 days, and are considered to pose minimal harm. In the event of a significant storm, it is advisable to contact your cruise operators for alternative solutions.

Enjoying the sunset with family and loved ones on Halong Bay.
Enjoying the sunset with family and loved ones on Halong Bay.

Weather & Cancellation

The regulatory authority overseeing all activities in Halong Bay is the Halong Bay Management Board, responsible for authorizing cruise companies to operate while retaining the authority to cancel or curtail trips for passenger safety.

  • Reasons for Cancellation: Primarily triggered by adverse weather conditions like typhoons, storms, monsoons, or heavy fog.
  • Decision-Making Window: Typically, decisions regarding tour or cruise cancellations are made by the Halong Bay Management Board before 3:00 PM on the day of the scheduled trip.

While cruise companies and travel agents are obligated to adhere to the Board’s decisions, their priority is promptly informing passengers and arranging the best possible alternatives.

For passengers, proactive measures are recommended:

  • Stay Informed: Regularly check news updates and maintain contact with travel agents or cruise operators for swift notifications regarding any cancellations.

In the event of trip cancellations due to inclement weather, consider the following scenarios for alternative arrangements:

Scenario #1 – Prior to departure from Hanoi:

If notified of a cancellation before departing for your trip, promptly contact your travel agent for further guidance and alternatives. Explore Hanoi on a short tour while making the most of your time if you are waiting for the next trip.

Scenario #2 – After arriving in Halong Bay:

If you receive cancellation news after arriving at Ha Long Bay, you have the option to return to Hanoi, wait for the cruise the day after, or check the cancellation policy from your cruise company. The cruise operator will arrange transportation for your return to Hanoi if you choose the first option. Be aware that due to adverse weather, the next available cruise might be delayed by several days if you decide to wait.

Scenario #3 – During your cruise trip:

In the event of a cancellation during a cruise trip, your safety is the top priority. Depending on the weather conditions, the cruise operator may make different arrangements to ensure your safety. If informed of the cancellation on the first day and the weather forecast for the next day is favorable, the trip may be shortened accordingly. Spend a night at a hotel on the mainland and then resume your journey. If the weather is not expected to improve, consider asking the cruise company for a transfer back to Hanoi or inquire about their refund policy.

All the cruise operators will have this cancellation policy when you book the cruise, you can check the weather & cancellation issues related here: https://baithojunks.com/cancellation-and-amendments-policy/

Public Holiday & Festivals

Craving a more serene glimpse of Halong Bay’s wonders? Not only weather issues, consider steering clear of these vibrant domestic travel periods within Vietnam:

  • International New Year (January 1st)
  • Lunar New Year (Tet Festival) (February 10-12, 2024)
  • Hung King Festival (April 18, 2024)
  • Liberation Day (April 30th)
  • Labour Day (May 1st)
  • National Day (September 2nd)
Hang Luồn - Ha Long Bay
Hang Luồn – Ha Long Bay

While these holidays offer festive experiences, they also draw large crowds, potentially impacting the tranquility of your visit. By planning your trip around these dates, you can enjoy a more peaceful encounter with Halong Bay’s breathtaking beauty.

Leave a Reply

Your email address will not be published. Required fields are marked *

Welcome you to Bai Tho Junks! Feel free to chat with us here