The highest day temperature in December 2025 was 64°F. The lowest night temperature was 34°F. The average values for day and night temperatures during December were 50.2°F и 46.2°F respectivly.

The average sea surface temperature in December 2025 for Mussera was 59.2°F. The maximum and minimum values were 55.8°F and 62.2°F respectively.

You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in December for Mussera is 3.7 in. It makes december one of the most rainy months of the year.

The average wind speed in December is 7.0 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 Mussera in December is 5.0 hours.