Bar Harbor Weather in December
During December, Bar Harbor experiences low daytime temperatures of 4°C (39°F) and cooler nights around -5°C (23°F). As part of the winter season, expect quite a bit of snow/rainfall. Around 159 mm (6.3 in) is typical.
Rainfall in Bar Harbor in December
Analyzing past climate data, one can expect approximately 15 days of snow/rain, averaging 159 mm (6.3 in). 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 Bar Harbor in December
Expect highs of 4°C (39°F) in Bar Harbor in December, with nights dropping to around -5°C (23°F). December is in the winter season. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. With overnight lows of -5°C (23°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. Known for its cold temperatures, this month requires warm clothing. Ensure you dress appropriately to stay comfortable.December in Bar Harbor has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations 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 the United States of America, check out our Bar Harbor's climate page.
Bar Harbor Temperature in December
Min Temperature
-5°C (23°F)
Max Temperature
4°C (39°F)
Chance of Rain
50%
Precipitation
159 mm (6.3 in)
Rainy days
15 days
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Bar Harbor 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 -10°C (14°F) to -3°C (27°F).
Average temperatures in December
Historical weather for Bar Harbor in December
Browse day-by-day weather records for Bar Harbor spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bar Harbor historical weather extremes in December
Our historical data for Bar Harbor spans 1997 to 2025, revealing these weather extremes.
- The warmest day in December was on December 1, 2020, with a maximum of 16°C (61°F).
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
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What to Wear in Bar Harbor in December
Dress warmly and in layers for your trip to Bar Harbor in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. It's going to pour! Pack a good poncho and prepare for very wet conditions.What To Do in Bar Harbor 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 the United States of America, check out our Bar Harbor's climate page.
See the full Bar Harbor climate overview or explore weather in the United States of America.
