The highest day temperature in December 2023 was 58°F. The lowest night temperature was 30°F. The average values for day and night temperatures during December were 50.9°F и 45.3°F respectivly.

The average sea surface temperature in December 2023 for Rennes was 51.3°F. The maximum and minimum values were 49.4°F and 54.4°F respectively.

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

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

The average wind speed in December is 10.9 mph. It makes December one of the most windy months of the year for Rennes.

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 Rennes in December is 3.6 hours.