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Ha Long Bay Sea Temperature in January

Vietnam

December Ha Long Bay year-round → February

Average sea temperature for Ha Long Bay, Vietnam across January, based on 10 years of daily readings.

Average

20.17° C

High

22.56° C

Low

17.69° C

Water at this temperature is very pleasant to swim in. If you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

January is the 11th warmest of 12 months at Ha Long Bay. On average the water sits 5.5° than the year-round mean of 25.72° C.

Compared to December, January is 2.3° cooler than (22.51° C in December). By February the water is usually 19.4° C.

Ha Long Bay Day-by-Day Water Temperature in January

10-year low, average and high

16.5° C
18.3° C
20.0° C
21.8° C
23.5° C
1
5
10
15
20
25
31
Day-by-day low and high band with the 10-year daily average through January. Range Average

Each vertical bar above is one day of January. The shaded band covers the range the water has reached on that day across the last 10 years — the lowest reading at the bottom, the highest at the top. The line running through the bars is the daily average over those 10 years, so you can see the typical shape of the month at Ha Long Bay.

A narrow band means the temperature on that day has stayed close to the average year on year. A taller band means it has swung more, often because of changeable weather around that time of year. Hovering a day pulls up its low, average, and high.

January Water Temperature Table for Ha Long Bay

10-year daily averages

Day Average Low High
January 1 20.93° C 18.8° C 22° C
January 2 21.01° C 19.65° C 21.89° C
January 3 21° C 19.6° C 21.9° C
January 4 20.84° C 19.46° C 21.87° C
January 5 20.83° C 19.44° C 21.92° C
January 6 20.69° C 19.34° C 21.89° C
January 7 20.63° C 18.78° C 21.7° C
January 8 20.59° C 18.75° C 21.88° C
January 9 20.52° C 18.83° C 22° C
January 10 20.56° C 18.8° C 22.56° C
January 11 20.33° C 18.11° C 22.12° C
January 12 20.05° C 18.11° C 21.4° C
January 13 20.15° C 18.4° C 21.29° C
January 14 20.34° C 18.95° C 21.78° C
January 15 20.31° C 18.95° C 21.63° C
January 16 20.25° C 18.82° C 21.3° C
January 17 20.18° C 18.51° C 21.21° C
January 18 19.98° C 18.52° C 20.95° C
January 19 19.84° C 18.61° C 21.15° C
January 20 19.77° C 18.46° C 21.28° C
January 21 19.8° C 18.27° C 21.15° C
January 22 19.84° C 18.24° C 21° C
January 23 19.85° C 18.39° C 21.02° C
January 24 19.76° C 18.05° C 21.08° C
January 25 19.69° C 18.07° C 21.07° C
January 26 19.68° C 18.32° C 21.1° C
January 27 19.61° C 18.23° C 21.22° C
January 28 19.57° C 17.69° C 21.53° C
January 29 19.62° C 17.84° C 21.68° C
January 30 19.49° C 17.95° C 20.76° C
January 31 19.44° C 17.82° C 20.79° C

Where January Sits in the Year

January highlighted

14.0° C
19.0° C
24.0° C
29.0° C
34.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
20.17° C
19.4° C
20.69° C
23.75° C
27.55° C
29.84° C
30.39° C
30.32° C
29.96° C
28.37° C
25.65° C
22.51° C
10-year monthly history for Ha Long Bay. Bars span historical low to high; the line marks the monthly average. Range Average
January → February → March → April → May → June → July → August → September → October → November → December →

Nearby Locations in January

Compare other Vietnam water for the same month

Ha Long Bay Location

20.9101, 107.1839

20.91005, 107.18390 View on OpenStreetMap →

Ha Long Bay sits at 20.9101°N, 107.1839°E, on the coast of Vietnam. The marker on the map shows the spot the readings on this page come from. It usually sits a short distance from the town centre, out on the open water itself, so the numbers stay tied to the coast rather than a generic point inland.

Coastlines bend, headlands focus the water, and the temperature can run noticeably differently between two beaches that look close together on a map. Comparing nearby locations is a quick way to see how local geography is shaping the readings.

Nearest locations to Ha Long Bay