Halong Bay Weather
What is the weather like in Halong Bay, Vietnam right now? Currently: °C. .
Floating village and rock islands in Halong Bay, Vietnam
7 Days Weather Forecast
Local hourly Halong Bay weather forecast of rain, temperature, sunrise, humidity, wind and pressure.
Thu, 14 August
Thunderstorm with slight hail
High 33°C
Low 27°C
- Sun: 05:30
- Wind: 6.2 km/h
- Humidity: 82%
- Rain: 30.3mm
Fri, 15 August
Thunderstorm
High 29°C
Low 27°C
- Sun: 05:30
- Wind: 12.7 km/h
- Humidity: 82%
- Rain: 12.5mm
Sat, 16 August
Slight rain showers
High 32°C
Low 26°C
- Sun: 05:31
- Wind: 16.9 km/h
- Humidity: 82%
- Rain: 2.0mm
Sun, 17 August
Thunderstorm
High 34°C
Low 27°C
- Sun: 05:31
- Wind: 14.9 km/h
- Humidity: 82%
- Rain: 2.5mm
Mon, 18 August
Thunderstorm
High 31°C
Low 27°C
- Sun: 05:31
- Wind: 5.1 km/h
- Humidity: 82%
- Rain: 17.6mm
Tue, 19 August
Thunderstorm
High 30°C
Low 27°C
- Sun: 05:32
- Wind: 13.6 km/h
- Humidity: 82%
- Rain: 17.5mm
Wed, 20 August
Thunderstorm with slight hail
High 30°C
Low 27°C
- Sun: 05:32
- Wind: 11.2 km/h
- Humidity: 82%
- Rain: 25.2mm
Last updated: August 14, 2025
Halong Bay Climate
Halong Bay enjoys a humid subtropical climate, categorized as Cwa according to the Köppen classification. This means that winters are generally dry, while summers can be quite humid. Throughout the year, temperatures can vary quite a bit, with highs reaching around 31.2°C (88.16°F) and lows dropping to about 14.1°C (57.38°F). On average, the yearly temperature hovers around a comfortable 23.5°C (74.39°F). Rainfall is a notable feature of this climate, with an annual average of nearly 1379.9 millimeters (54.33 inches), contributing to the lush greenery and stunning scenery that Halong Bay is famous for.
Monthly Averages
Halong Bay experiences a variety of weather throughout the year. January and February have cooler temperatures, with highs around 19-20°C and fewer rainy days. As spring approaches in March and April, temperatures rise, reaching up to 26°C, accompanied by more precipitation. The summer months of May through August are warm and humid, with highs peaking at over 31°C and frequent rainfall. Autumn brings a gradual decrease in temperatures and rainy days, making it a pleasant time to visit. December cools down again, averaging around 20°C.| Months | High / Low (°C) | Rain |
|---|---|---|
| January | 19.1° / 14.1° | 7.5 days |
| February | 20.4° / 15.7° | 5.2 days |
| March | 23.0° / 18.5° | 8.3 days |
| April | 26.1° / 21.1° | 9.5 days |
| May | 29.9° / 24.6° | 16.5 days |
| June | 31.2° / 26.3° | 21.3 days |
| July | 31.1° / 26.2° | 22.8 days |
| August | 30.8° / 25.7° | 22.6 days |
| September | 30.4° / 24.8° | 16.2 days |
| October | 28.0° / 21.8° | 8.3 days |
| November | 25.1° / 19.1° | 5.7 days |
| December | 20.5° / 14.8° | 5.0 days |
Frequently asked questions
What is the coldest month in Halong Bay?
January is the coldest month in Halong Bay, with average temperatures dipping to around 14.1°C (57.4°F). Be prepared for cool weather and consider bringing warmer clothing if you're planning to visit during this time.
How much rain does Halong Bay get every year?
Halong Bay receives about 1,380 mm (54.3 inches) of rainfall each year, spread over approximately 149 days.
What month has the least rain in Halong Bay?
The driest month in Ha Long Bay is December, featuring approximately 5 rain days and about 18.3 mm (0.72 inches) of precipitation.
What months are the most humid in Halong Bay?
April and May in Halong Bay experience the highest humidity levels of the year, with averages reaching around 83.4%. During these months, visitors can expect a muggy atmosphere, so it's advisable to stay hydrated and plan activities accordingly.
What month has the least sunshine in Halong Bay?
The month with the least sunshine in Halong Bay is January, averaging just 5.8 hours of sunshine per day.
Which month has the most daylight in Halong Bay?
In June, Halong Bay enjoys an average of 13.4 hours of daylight, making it the month with the longest daylight hours of the year.
What is the hottest month in Halong Bay?
June is the hottest month in Halong Bay, with temperatures typically ranging from 26.3°C (79.3°F) to a high of 31.2°C (88.2°F). During this time, you can expect warm, sunny days, making it a popular season for visitors.
When does Halong Bay have the most sunshine?
June boasts an impressive average of 12.5 hours of sunshine each day, making it Halong Bay's sunniest month.
What month has the most rainfall in Halong Bay?
The wettest month in Ha Long Bay is **July**, with about **22.8 rainy days** and total precipitation reaching **234.4 mm (9.23 inches)**.
What month has the least humidity in Halong Bay?
December is the least humid month in Halong Bay, with an average relative humidity of just 72.5%.
Which month has the shortest daylight in Halong Bay?
December has the shortest days in Ha Long Bay, offering an average of just 10.9 hours of daylight.
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