Grand Manan Island Weather in December
Grand Manan Island in December sees low daytime temperatures of 5°C (41°F) and nighttime lows of -2°C (28°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.
Rainfall in Grand Manan Island in December
As the month with the highest rainfall, make sure to have an umbrella to manage the showers. You can expect snow/rain on roughly 13 days based on historical data, averaging 150 mm (5.9 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Grand Manan Island in December
December in Grand Manan Island brings low temperatures, with highs of 5°C (41°F) and nights around -2°C (28°F). Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. Nights drop below freezing to -2°C (28°F). An extra blanket is worth packing if you're unsure about the heating where you're staying.December in Grand Manan Island has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Grand Manan Island's climate page.
Grand Manan Island Temperature in December
Min Temperature
-2°C (28°F)
Max Temperature
5°C (41°F)
Chance of Rain
43%
Precipitation
150 mm (5.9 in)
Rainy days
13 days
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Grand Manan Island typically drop from around 4°C (39°F) at the start of December to approximately -1°C (30°F) by the end. Nights are very cold, with lows typically ranging from -11°C (12°F) to -3°C (27°F).
Average temperatures in December
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Grand Manan Island in December
Browse day-by-day weather records for Grand Manan Island spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Grand Manan Island historical weather extremes in December
Based on 44 years of weather observations in Grand Manan Island between 1981 and 2025, these are the recorded extremes.
- On December 1, 2020, temperatures climbed to 15°C (59°F), marking the warmest December day on record.
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 →
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What to Wear in Grand Manan Island in December
We recommend to layer up for chilly conditions in Grand Manan Island 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.What To Do in Grand Manan Island in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Grand Manan Island's climate page.
See the full Grand Manan Island climate overview or explore weather in Canada.
