The best times to visit Halong for ideal weather are
November 12th to April 8th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Halong Travel Guide
Other Halong Travel Info
Weather in Halong
Average temperatures in Halong vary greatly. Considering humidity, temperatures feel hot for about half of the year and otherwise nice with a fair chance of precipitation about half of the year. The area is somewhat temperate — in the 41st percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Halong, the hottest months are June, July, and then August. See average monthly temperatures below. The warmest time of year is generally late June where highs are regularly around 91°F (32.8°C) with temperatures rarely dropping below 79.5°F (26.4°C) at night.
Halong Temperatures (Fahrenheit)
Halong Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Halong Perceived Temperature (F)
Halong Perceived Temperature (C)
Average Halong Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Halong are January, December, and then February. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid November. For example, on the week of November 12th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid August with an average of 3 days of significant precipitation the week of August 6th.
When can you find snow in Halong? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Halong.
Snow on the Ground
The graph below shows the average snow on the ground in Halong (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Halong has some extremely humid months, and high humidity throughout the year. The least humid month is December (76.6% relative humidity), and the most humid month is March (89.7%).
Wind in Halong is usually extremely calm. The windiest month is July, followed by May and June. July’s average wind speed of around 4.5 knots (5.2 MPH or 8.4 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid July where average top sustained speeds reach 8.2 knots, which is considered a gentle breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Halong.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||3||Barely noticeable||5.1||Light breeze|
|Feb||3.3||Barely noticeable||5.4||Light breeze|
|Mar||3.4||Barely noticeable||5.7||Light breeze|
|Apr||3.8||Barely noticeable||6.3||Light breeze|
|May||4.4||Light breeze||7.1||Light breeze|
|Jun||4.4||Light breeze||7.1||Gentle breeze|
|Jul||4.5||Light breeze||7.4||Light breeze|
|Aug||3.8||Barely noticeable||6.5||Light breeze|
|Sep||4||Light breeze||6.6||Light breeze|
|Oct||4||Light breeze||6.4||Light breeze|
|Nov||3.8||Barely noticeable||6.1||Light breeze|
|Dec||3.5||Barely noticeable||6||Light breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Halong?
Our best data indicates this area is somewhat safe. As of Oct 07, 2019 there are travel warnings for Vietnam; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 22, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Halong, Vietnam is October, followed by January and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Halong in February. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Halong Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 89.2°F (31.8°C) and 69.9°F (21.1°C) with warmer temperatures in the later months. Rain is somewhat common with 4 to 8 days of significant precipitation per month. Spring is the slowest for tourism, which makes it a good time for those looking for deals.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the most precipitation with 8 to 12 days of precipitation per month. June – August is the second busiest season for tourism in Halong, so lodging and other accommodations may cost slightly more.
Fall (September through November)
Fall daily highs range from 88°F (31.1°C) and 75.4°F (24.1°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 3 to 11 days per month. Tourism is the busiest during these months due to the weather, so hotels may be higher priced.
Winter (December through February)
Weather is somewhat cool this time of year in Halong to be enjoyable for warm weather travelers. The average high during this season is between 72.8°F (22.7°C) and 64.6°F (18.1°C). On average, it rains or snows a smalll amount: 2 to 3 times per month. These times of year are fairly slow with tourists.