The highest day temperature in December 2025 was 81°F. The lowest night temperature was 57°F. The average values for day and night temperatures during December were 74.1°F и 67.1°F respectivly.

The average sea surface temperature in December 2025 for Hai Phong was 71.9°F. The maximum and minimum values were 70.6°F and 72.8°F respectively.

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

Precipitation total in December for Hai Phong is 0.7 in. It makes december the least rainy month of the year.

The average wind speed in December is 6.5 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 Hai Phong in December is 4.9 hours.