The highest day temperature in April 2025 was 88°F. The lowest night temperature was 62°F. The average values for day and night temperatures during April were 81.4°F и 72.6°F respectivly.

The average sea surface temperature in April 2025 for Ha Long was 76.5°F. The maximum and minimum values were 71.6°F and 81.6°F respectively.

Most of the days in April are gloomy but you can also expect sunny days.

Precipitation total in April for Ha Long is 1.3 in.

The average wind speed in April is 7.6 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Ha Long in April is 5.7 hours.