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Ha Long
Water Temperature in the South China Sea in Ha Long, Vietnam: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in Ha Long in Vietnam, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in Ha Long
19.5°C
TODAY
18.8°C
YESTERDAY
18.2°C
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the South China Sea in Ha Long is 19.5°C. This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart for South China Sea in Ha Long Over the Last 30 Days
The water temperature in Ha Long today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.
According to our forecast, the sea temperature in Ha Long will remain nearly unchanged in the coming days, its value will be 20.4°C.
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts across Vietnam to enhance accuracy.
Water temperature data for Ha Long and nearby towns and resorts is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| Mar 4 | 18.2°C | 20.0°C | |
| Mar 5 | 18.1°C | 20.3°C | |
| Mar 6 | 18.2°C | 20.5°C | |
| Mar 7 | 18.8°C | 20.5°C | |
| Mar 8 | 18.7°C | 20.5°C | |
| Mar 9 | 18.8°C | 20.3°C | |
| Mar 10 | 18.8°C | 20.3°C | |
| Mar 11 | 19.5°C | 20.8°C | |
| Mar 12 | 20.5°C | 19.6°C | |
| Mar 13 | 20.8°C | 19.7°C | |
| Mar 14 | 21.3°C | 19.9°C | |
| Mar 15 | 21.3°C | 20.0°C | |
| Mar 16 | 20.8°C | 20.1°C | |
| Mar 17 | 20.8°C | 20.2°C | |
| Mar 18 | 21.3°C | 20.3°C | |
| Mar 19 | 21.0°C | 20.4°C |
Sea Temperature in Ha Long Throughout the Year
Throughout the year, the sea temperature in Ha Long is always above 64°F (18°C), the sea temperature exceeds 72°F (22°C) for 262 days, and exceeds 77°F (25°C) for 207 days.
Below is the annual chart of sea temperature changes in the South China Sea in Ha Long.
January
| Minimum | Average | Maximum |
|---|---|---|
| 17°C | 19.5°C | 22°C |
February
| Minimum | Average | Maximum |
|---|---|---|
| 17°C | 19.5°C | 22°C |
March
| Minimum | Average | Maximum |
|---|---|---|
| 17°C | 20°C | 23°C |
April
| Minimum | Average | Maximum |
|---|---|---|
| 19°C | 23°C | 27°C |
May
| Minimum | Average | Maximum |
|---|---|---|
| 24°C | 27.5°C | 31°C |
June
| Minimum | Average | Maximum |
|---|---|---|
| 27°C | 29.5°C | 32°C |
July
| Minimum | Average | Maximum |
|---|---|---|
| 29°C | 31°C | 33°C |
August
| Minimum | Average | Maximum |
|---|---|---|
| 28°C | 30°C | 32°C |
September
| Minimum | Average | Maximum |
|---|---|---|
| 26°C | 29°C | 32°C |
October
| Minimum | Average | Maximum |
|---|---|---|
| 22°C | 27°C | 32°C |
November
| Minimum | Average | Maximum |
|---|---|---|
| 23°C | 25.5°C | 28°C |
December
| Minimum | Average | Maximum |
|---|---|---|
| 17°C | 21.5°C | 26°C |
Monthly Water Temperature Histogram for South China Sea in Ha Long
You can explore detailed data on how the water temperature in Ha Long varies each month:
What Beaches Are There In and Around Ha Long?
Ha Long Beach
Ha Long Beach is a 4-stars sandy beach, located in a 3 km (2 miles) radius of Ha Long. There are lifeguards on the beach. There is parking. There are cafés. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Burning Beach
Burning Beach is a 4-stars sandy beach, located in a 4 km (2 miles) radius of Ha Long. There is parking. There are restrooms. There are cafés. Burning Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Bai Chay Beach
Bai Chay Beach is a 4-stars sandy beach, located in a 4 km (2 miles) radius of Ha Long. There is parking. There are restrooms. There are cafés. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Marina Beach
Marina Beach is a 4-stars sandy beach, located in a 8 km (5 miles) radius of Ha Long. There is parking. There are restrooms. There are cafés. Marina Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Beach Paradise Bay
Beach Paradise Bay is a 1-stars sandy beach, located in a 9 km (6 miles) radius of Ha Long.
Tuan Chau Beach-Tuan Chau Island
Tuan Chau Beach-Tuan Chau Island is a 4-stars sandy beach, located in a 9 km (6 miles) radius of Ha Long. There is parking. There are restrooms. There are cafés. Tuan Chau Beach-Tuan Chau Island is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Ha Long Weather
MARCH 12
21°C / 26°C
light rainhumidity: 88% | wind: 4 km/h
MARCH 13
22°C / 27°C
overcast clouds: 85-100%humidity: 85% | wind: 4 km/h
MARCH 14
20°C / 24°C
light rainhumidity: 85% | wind: 3 km/h
Sea Temperature in the South China Sea in Ha Long: General Trends and Swimming Opportunities
The coastal areas of Vietnam typically feature a tropical climate with high humidity levels, characterized by a dry season from November to April and a wet season from May to October. They tend to have both hotter temperatures and higher rainfall levels compared to the country's inland regions.
Ha Long is located in Asia in the Northern Hemisphere at a latitude of 21 degrees, along the shores of the South China Sea. Ha Long lies within in Vietnam.
The average annual daytime air temperature in Ha Long is 27°C (81°F), with the average nighttime temperature being 20°C (68°F). The highest average daily temperature occurs in July, reaching 32°C (89°F), while the lowest is in January at 19°C (67°F). As for nighttime temperatures, the minimum average temperature of 14°C (56°F) is recorded in January, and the maximum is in July, reaching 26°C (78°F).
According to historical data, Ha Long experiences 133 rainy days per year, which accounts for 36 percent of all days in the year. On average, there are 11 rainy days each month. The wettest month is August, with 19 rainy days and 411 mm (16.2 inches) of precipitation, while the driest month is December, which typically has 4 rainy days and only 21 mm (0.8 inches) of precipitation.
The average annual water temperature in South China Sea in Ha Long is 25°C (77°F). In January, the water reaches its lowest point of the year at 17°C (63°F), while in July, it peaks at 33°C (91°F). The months suitable for comfortable beach vacations and swimming in the South China Sea are May, June, July, August, September, October, and November. During this period, the water temperature stays above 20°C (68°F) and can reach up to 33°C (91°F) on some days.
Geographical Location of Ha Long
Frequently Asked Questions About Ha Long and its Water Temperatures
What is the current sea temperature in Ha Long?
The water temperature today in the South China Sea in Ha Long is 67°F (19.5°C).
In which months is the water temperature in Ha Long comfortable for swimming?
The water temperature in the South China Sea in Ha Long is comfortable for swimming and beach vacations in May, June, July, August, September, October, and November.
What is the water temperature in Ha Long during the winter?
The water temperature in the South China Sea in Ha Long during the winter ranges from 17°C to 26°C (63°F to 79°F).
What is the water temperature in Ha Long during the spring?
The water temperature in the South China Sea in Ha Long during the spring ranges from 17°C to 31°C (63°F to 88°F).
What is the water temperature in Ha Long during the summer?
The water temperature in the South China Sea in Ha Long during the summer ranges from 27°C to 33°C (81°F to 91°F).
What is the water temperature in Ha Long during the fall?
The water temperature in the South China Sea in Ha Long during the fall ranges from 22°C to 32°C (72°F to 90°F).
Is it possible to swim in the sea in Ha Long year-round?
No, it is not possible to swim in the South China Sea in Ha Long year-round, the months suitable for comfortable swimming are May, June, July, August, September, October, and November.
Is Ha Long a popular tourist destination for beach vacations?
Ha Long has a moderate level of popularity for beach vacations; while it does receive some visitors, it is not among the top seaside destinations, as other locations may offer more favorable conditions.
What sea temperatures can I expect in Ha Long in the next month?
In April, the water temperature in the South China Sea in Ha Long will range between 66°F (19°C) and 81°F (27°C)