The highest day temperature in December 2023 was 83°F. The lowest night temperature was 51°F. The average values for day and night temperatures during December were 70.7°F и 66.7°F respectivly.

The average sea surface temperature in December 2023 for Cat Ba Island was 75.6°F. The maximum and minimum values were 70.6°F and 79.0°F respectively.

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

Precipitation total in December for Cat Ba Island is 1.0 in. It makes december the least rainy month of the year.

The average wind speed in December is 9.1 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 Cat Ba Island in December is 5.1 hours.