Climate and monthly weather forecast
Ha Long, Vietnam

The limestone rocks in Ha Long Bay, Vietnam, with cruise boats docked off the shores of the beautiful blue waters
The limestone rocks in Ha Long Bay, Vietnam, with cruise boats docked off the shores of the beautiful blue waters

Weather in January

January, like December, is another pleasant winter month in Ha Long, Vietnam, with an average temperature varying between 13.7°C (56.7°F) and 20.1°C (68.2°F). January is the coldest month, with an average high-temperature of 20.1°C (68.2°F) and an average low-temperature of 13.7°C (56.7°F). Weather in January »

Weather in February

The last month of the winter, February, is a warm month in Ha Long, Vietnam, with an average temperature fluctuating between 16°C (60.8°F) and 23.8°C (74.8°F). In February, the average high-temperature slightly increases from an agreeable 20.1°C (68.2°F) in January to a moderately hot 23.8°C (74.8°F). Weather in February »

Weather in March

The first month of the spring, March, is still a warm month in Ha Long, Vietnam, with an average temperature ranging between min 18.9°C (66°F) and max 26.8°C (80.2°F). In Ha Long, the average high-temperature in March marginally rises from a moderately hot 23.8°C (74.8°F) in February to a still warm 26.8°C (80.2°F). Weather in March »

Weather in April

April in Ha Long, Vietnam, is a hot spring month, with an average temperature varying between 21.4°C (70.5°F) and 30.6°C (87.1°F). In Ha Long, the average high-temperature in April slightly increases from a moderately hot 26.8°C (80.2°F) in March to a tropical 30.6°C (87.1°F). Weather in April »

Weather in May

The last month of the spring, May, is another tropical month in Ha Long, Vietnam, with temperature in the range of an average high of 33.3°C (91.9°F) and an average low of 24°C (75.2°F). In May, the average high-temperature is relatively the same as in April - a still tropical 33.3°C (91.9°F). Weather in May »

Weather in June

The first month of the summer, June, is still a hot month in Ha Long, Vietnam, with an average temperature ranging between max 34.1°C (93.4°F) and min 25.4°C (77.7°F). June is the warmest month, with an average high-temperature of 34.1°C (93.4°F) and an average low-temperature of 25.4°C (77.7°F). In June, the average heat index is appraised at a blazing hot 50°C (122°F). Weather in June »

Weather in July

July, like June, is a hot summer month in Ha Long, Vietnam, with temperature in the range of an average high of 32.9°C (91.2°F) and an average low of 25°C (77°F). In Ha Long, Vietnam, the average high-temperature in July is essentially the same as in June - a still hot 32.9°C (91.2°F). Weather in July »

Weather in August

The last month of the summer, August, is also a hot month in Ha Long, Vietnam, with an average temperature fluctuating between 31.9°C (89.4°F) and 24.4°C (75.9°F). In August, the average high-temperature is practically the same as in July - a still hot 31.9°C (89.4°F). Weather in August »

Weather in September

The first month of the autumn, September, is also a hot month in Ha Long, Vietnam, with an average temperature fluctuating between 30.9°C (87.6°F) and 23.3°C (73.9°F). In Ha Long, Vietnam, the average high-temperature in September is relatively the same as in August - a still hot 30.9°C (87.6°F). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Ha Long, Vietnam, with an average temperature varying between 28.8°C (83.8°F) and 21°C (69.8°F). In October, the average high-temperature is practically the same as in September - a warm 28.8°C (83.8°F). Weather in October »

Weather in November

November, the last month of the autumn in Ha Long, is also a moderately hot month, with temperature in the range of an average low of 18.2°C (64.8°F) and an average high of 25.9°C (78.6°F). In Ha Long, Vietnam, the average high-temperature in November is almost the same as in October - a still warm 25.9°C (78.6°F). Weather in November »

Weather in December

December, the first month of the winter in Ha Long, is still a pleasant month, with an average temperature fluctuating between 14.1°C (57.4°F) and 21.5°C (70.7°F). In December, the average high-temperature slightly decreases from a moderately hot 25.9°C (78.6°F) in November to an agreeable 21.5°C (70.7°F). Weather in December »
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FAQ

What is the coldest month in Ha Long?

January is the coldest month in Ha Long, with an average high-temperature of 20.1°C (68.2°F) and an average low-temperature of 13.7°C (56.7°F).

How many days does it rain in Ha Long?

Throughout the year, there are 237.1 rainfall days, and 1472mm (57.95") of precipitation is accumulated.

When is the sea coldest in Ha Long?

January and February, with an average sea temperature of 19.3°C (66.7°F), are months with the coldest seawater in Ha Long.

What is the month with the least sunshine in Ha Long?

The month with the least sunshine in Ha Long is January, with an average of 4h of sunshine.

What is the month with the lowest UV index in Ha Long?

The months with the lowest UV index in Ha Long are January and December, with an average maximum UV index of 4.

What is the least humid month in Ha Long?

With an average relative humidity of 71%, February is the least humid month in Ha Long.

What is the driest month in Ha Long?

February is the month with the least rainfall in Ha Long, Vietnam. Rain falls for 12.8 days and accumulates 15mm (0.59") of precipitation.

What is the month with the highest UV index in Ha Long?

The months with the highest UV index in Ha Long, Vietnam, are April through August, with an average maximum UV index of 7.

What is the warmest month in Ha Long?

June is the warmest month, with an average high-temperature of 34.1°C (93.4°F) and an average low-temperature of 25.4°C (77.7°F).

When are the longest days in Ha Long?

June has the longest days of the year, with an average of 13h and 23min of daylight.

What month has the most sunshine in Ha Long?

With an average of 9.9h of sunshine, June has the most sunshine of the year.

When is the sea warmest in Ha Long?

With an average sea temperature of 30.8°C (87.4°F), July is the month with the warmest seawater in Ha Long.

What are the most humid months in Ha Long?

The months with the highest humidity in Ha Long are August and September, with an average relative humidity of 83%.

What is the wettest month in Ha Long?

August is the month with the most rainfall. Rain falls for 26.8 days and accumulates 317mm (12.48") of precipitation.

What is the month with the shortest days in Ha Long?

The month with the shortest days is December, with an average of 10h and 53min of daylight.

Is there Daylight Saving Time (DST) in Ha Long?

Ha Long does not utilize Daylight Saving Time (DST). +07 timezone is used over the entire year.

Average temperature
Ha Long, Vietnam

Average temperature - Ha Long, Vietnam

The warmest month (with the highest average high temperature) is June (34.1°C).
The month with the lowest average high temperature is January (20.1°C).

The month with the highest average low temperature is June (25.4°C).
The coldest month (with the lowest average low temperature) is January (13.7°C).

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Average pressure
Ha Long, Vietnam

Average pressure - Ha Long, Vietnam

The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is June (1003.4mbar).

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Average wind speed
Ha Long, Vietnam

Average wind speed - Ha Long, Vietnam

The windiest month (with the highest average wind speed) is March (8.6km/h).
The calmest months (with the lowest average wind speed) are August and September (5.2km/h).

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Average humidity
Ha Long, Vietnam

Average humidity - Ha Long, Vietnam

The months with the highest relative humidity are August and September (83%).
The month with the lowest relative humidity is February (71%).

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Average rainfall
Ha Long, Vietnam

Average rainfall - Ha Long, Vietnam

The wettest month (with the highest rainfall) is August (317mm).
The driest month (with the least rainfall) is February (15mm).

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Average rainfall days
Ha Long, Vietnam

Average rainfall days - Ha Long, Vietnam

The month with the highest number of rainy days is July (28.3 days).
The month with the least rainy days is February (12.8 days).

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Average sea temperature
Ha Long, Vietnam

Average sea temperature - Ha Long, Vietnam

The best month for swimming (with the highest average sea temperature) is July (30.8°C).
The coldest months (with the lowest average sea temperature) are January and February (19.3°C).

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Average daylight / Average sunshine
Ha Long, Vietnam

Average daylight / Average sunshine - Ha Long, Vietnam

The month with the longest days is June (Average daylight: 13h and 23min).
The month with the shortest days is December (Average daylight: 10h and 53min).

The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days
Ha Long, Vietnam

Average sunshine days - Ha Long, Vietnam

The month with the most sunshine days is December (15.5 days).
The month with the least sunshine days is July (2.3 days).

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Average UV index
Ha Long, Vietnam

Average UV index - Ha Long, Vietnam

The months with the highest UV index are April, May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 4).

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Average visibility
Ha Long, Vietnam

Average visibility - Ha Long, Vietnam

The months with the highest visibility are January, February, March, April, May, June, October, November and December (9km).
The months with the lowest visibility are July, August and September (8km).

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