The highest day temperature in December 2025 was 43°F. The lowest night temperature was 18°F. The average values for day and night temperatures during December were 29.5°F и 28.6°F respectivly.

The average sea surface temperature in December 2025 for Bonavista was 35.3°F. The maximum and minimum values were 32.4°F and 39.2°F respectively.

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

Precipitation total in December for Bonavista is 1.8 in. It makes december one of the most rainy months of the year.

The average wind speed in December is 14.2 mph. It makes December the most windy month of the year for Bonavista.

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 Bonavista in December is 2.3 hours.