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New Brunswick weather in December

Are you planning a trip to New Brunswick in December and wondering what kind of weather to expect? This page has all the details you need.

What is the weather like in New Brunswick in December?

New Brunswick is a region in Canada. December in New Brunswick generally has temperatures that range from very cold to cold, with high precipitation. The month of December is in the winter season.

Based on our climate data spanning from 1990-2020, the average maximum temperature is very cold in Edmundston at -3°C to cold in Grand Manan Island at 5°C. Nighttime temperatures generally drop to -2°C in Grand Manan Island and -12°C in Edmundston. December is a very cold month in some areas, so be prepared and make sure to dress up warm.

In December, precipitation varies across different areas. From high snowfall in Campbellton with an average of 102 mm to high snowfall in Saint Stephen with 156 mm. Looking at the climate data spanning the last 30 years, this month sees the heaviest rainfall of the year in Moncton. Most areas experience a moderate amount of sunshine, with approximately 101 hours of sunlight expected in Moncton. This makes it neither too gloomy nor overly bright.

To learn more about the conditions in specific areas of New Brunswick in December, check out the map below. For more details on the yearly weather, visit our New Brunswick climate page.

Where to go in New Brunswick in December

Find the average weather conditions in December for the most popular destinations in New Brunswick on the map below. Click on a destination dot for more detailed information.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in New Brunswick

What is the weather like in December for the 5 most popular destinations in New Brunswick?

Average weather in Moncton

In December Moncton generally has very low temperatures with maximum daytime temperatures around 2°C, minimum nighttime temperatures around -8°C and high monthly snow/rainfall. So on average the conditions are poor that month.

Moncton
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly snow/rainfall precipitationSnow/rainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
8°C 
-1°C 
95 hours 
100 mm 
15 days 
poor 
2°C 
-8°C 
101 hours 
115 mm 
17 days 
poor 
January   >> January
>>  
-2°C 
-13°C 
116 hours 
97 mm 
16 days 
poor 
Climate in Moncton

Average weather in Grand Manan Island

In December Grand Manan Island generally has low temperatures with maximum daytime temperatures around 5°C, minimum nighttime temperatures around -2°C and high monthly snow/rainfall. So on average the conditions are poor that month.

Grand Manan Island
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly snow/rainfall precipitationSnow/rainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
10°C 
4°C 
133 mm 
12 days 
poor 
5°C 
-2°C 
150 mm 
13 days 
poor 
January   >> January
>>  
2°C 
-6°C 
119 mm 
11 days 
poor 
Climate in Grand Manan Island

Average weather in Saint John

In December Saint John generally has low temperatures with maximum daytime temperatures around 3°C, minimum nighttime temperatures around -5°C and high monthly snow/rainfall. So on average the conditions are poor that month.

Saint John
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly snow/rainfall precipitationSnow/rainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
8°C 
2°C 
131 mm 
14 days 
poor 
3°C 
-5°C 
140 mm 
15 days 
poor 
January   >> January
>>  
-1°C 
-10°C 
117 mm 
13 days 
poor 
Climate in Saint John

Average weather in Fredericton

In December Fredericton generally has very low temperatures with maximum daytime temperatures around 1°C, minimum nighttime temperatures around -9°C and high monthly snow/rainfall. So on average the conditions are poor that month.

Fredericton
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly snow/rainfall precipitationSnow/rainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
7°C 
-2°C 
105 mm 
13 days 
poor 
1°C 
-9°C 
117 mm 
14 days 
poor 
January   >> January
>>  
-3°C 
-14°C 
97 mm 
12 days 
poor 
Climate in Fredericton

Average weather in Saint Andrews

In December Saint Andrews generally has low temperatures with maximum daytime temperatures around 3°C, minimum nighttime temperatures around -6°C and high monthly snow/rainfall. So on average the conditions are poor that month.

Saint Andrews
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly snow/rainfall precipitationSnow/rainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
9°C 
0°C 
111 mm 
12 days 
poor 
3°C 
-6°C 
124 mm 
12 days 
poor 
January   >> January
>>  
-1°C 
-11°C 
102 mm 
11 days 
poor 
Climate in Saint Andrews

Is your destination not in the list? Have a look at other destinations in New Brunswick, in Canada.

Is December the best time to visit New Brunswick?

In our view, December might not be the best time to travel to New Brunswick with often poor weather in Moncton.

On average, the best time to visit New Brunswick is in June, July, August and September with generally perfect weather in Moncton. In contrast, January, February, March, April, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in New Brunswick. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Canada? Get detailed historical weather averages for many cities in Canada.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.