The highest day temperature in December 2023 was 54°F. The lowest night temperature was 28°F. The average values for day and night temperatures during December were 46.2°F и 43.7°F respectivly.

The average sea surface temperature in December 2023 for Rotterdam was 46.3°F. The maximum and minimum values were 45.2°F and 48.8°F respectively.

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

Precipitation total in December for Rotterdam is 2.1 in. It makes december one of the most rainy months of the year.

The average wind speed in December is 13.1 mph. It makes December the most windy month of the year for Rotterdam.

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 Rotterdam in December is 2.6 hours.