St. John's Weather in December
St. John's in December averages 4°C (39°F) during the day and -2°C (28°F) at night. This is the wettest month of the year.
Rainfall in St. John's in December
Since this month has the highest rainfall, keep an umbrella with you to handle sudden showers. Climate statistics over the past 30 years suggest around 19 days of snow/rain, with 136 mm (5.4 in) average for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in St. John's in December
Expect highs of 4°C (39°F) in St. John's in December, with nights dropping to around -2°C (28°F). Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. With lows of -2°C (28°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated. This month is marked by cold temperatures, so wearing layers is key to staying warm. Don't be caught off-guard by the cold.
Sunshine in St. John's in December
The city usually sees around 62 hours of sunlight, indicating fewer sunny days.December in St. John's can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
St. John's Temperature in December
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St. John's Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in St. John's - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in St. John's typically drop from around 4°C (39°F) at the start of December to approximately 0°C (32°F) by the end. Nights are very cold, with lows typically ranging from -6°C (21°F) to -2°C (28°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather records for St. John's in December
Browse day-by-day weather records for St. John's spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
St. John's historical weather extremes in December
Based on 49 years of weather observations in St. John's between 1976 and 2025, these are the recorded extremes.
- The hottest December day on record in St. John's reached 16°C (61°F) (December 12, 2024).
- The coldest night in December in St. John's was on December 27, 1984, with a minimum of -19°C (-2°F).
Best Places in Canada in December
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in December →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in St. John's in December
We recommend to layer up for chilly conditions in St. John's in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.
What To Do in St. John's in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming4/10 -
Cycling3/10 -
Walking3/10 -
Camping1/10 -
Outdoor sports3/10
St. John's 3-Day Forecast
See the full St. John's climate overview or explore weather in Canada.
Popular in December
Where to go in December - average daytime high across popular destinations.
Vancouver
7°C (45°F) Toronto
4°C (39°F) Niagara Falls4°C (39°F) Montréal
0°C (32°F) Ottawa0°C (32°F) Calgary
-1°C (30°F) Whistler-3°C (27°F) Quebec City-2°C (28°F) 
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