Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January, with its average high-temperature of 20.1°C (68.2°F) and an average low-temperature of 13.7°C (56.7°F), holds the record as the coldest month in Ha Long.Humidity
The average relative humidity in January is 75%.Rainfall
In Ha Long, during January, the rain falls for 15.2 days and regularly aggregates up to 32mm (1.26") of precipitation. Throughout the year, there are 237.1 rainfall days, and 1472mm (57.95") of precipitation is accumulated.Sea temperature
The months with the coldest seawater are January and February, with an average sea temperature of 19.3°C (66.7°F).Note: For most people, a water temperature of 19.3°C (66.7°F) is not conducive to enjoyable swimming. Breathing control becomes harder as the water temperature dips below 21°C (69.8°F).
Daylight
The average length of the day in January is 11h and 1min.On the first day of the month, sunrise is at 06:28 and sunset at 17:21. On the last day of January, in Ha Long, sunrise is at 06:29 and sunset at 17:41 +07.
Sunshine
With an average of 4h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 4 during January translates into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
What are January temperatures?
What is the average humidity in January?
How many days does it rain in January?
When is the sea coldest?
What is the sea water temperature in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What are the months with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Ha Long, Vietnam
- Average high temperature in January: 20.1°C
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).
- Average low temperature in January: 13.7°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).
Average pressure in January
Ha Long, Vietnam
- Average pressure in January: 1019.1mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is June (1003.4mbar).
Average wind speed in January
Ha Long, Vietnam
- Average wind speed in January: 6.3km/h
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).
Average humidity in January
Ha Long, Vietnam
- Average humidity in January: 75%
The months with the highest relative humidity are August and September (83%).
The month with the lowest relative humidity is February (71%).
Average rainfall in January
Ha Long, Vietnam
- Average rainfall in January: 32mm
The wettest month (with the highest rainfall) is August (317mm).
The driest month (with the least rainfall) is February (15mm).
Average rainfall days in January
Ha Long, Vietnam
- Average rainfall days in January: 15.2 days
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).
Average sea temperature in January
Ha Long, Vietnam
- Average sea temperature in January: 19.3°C
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).
Average daylight in January /
Average sunshine in January
Ha Long, Vietnam
- Average daylight in January: 11h and 0min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in January: 4h and 0min
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).
Average sunshine days in January
Ha Long, Vietnam
- Average sunshine days in January: 11.6 days
The month with the most sunshine days is December (15.5 days).
The month with the least sunshine days is July (2.3 days).
Average UV index in January
Ha Long, Vietnam
- Average UV index in January: 4
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).
Average cloud cover in January
Ha Long, Vietnam
- Average cloud cover in January: 65
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is June (Cloud cover 42).
Average visibility in January
Ha Long, Vietnam
- Average visibility in January: 9km
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).
Ha Long, Vietnam
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