Southwest Harbor Weather in December
December in Southwest Harbor brings low temperatures around 3°C (37°F) during the day, dropping to -5°C (23°F) at night, with quite a bit of snow/rainfall expected, averaging around 142 mm (5.6 in) for the month.
Rainfall in Southwest Harbor in December
Expect around 17 days of snow/rain based on historical data, with 142 mm (5.6 in) average. 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 Southwest Harbor in December
In December, expect low temperatures in Southwest Harbor, with highs of 3°C (37°F) and lows of -5°C (23°F) at night. December is known for being in the winter season. Cold conditions tend to persist from morning through evening, so be prepared for winter weather. With lows of -5°C (23°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated. You will probably experience very cold weather in this month, so dressing warmly is vital. Be sure to prepare for the chill with the right clothing.December in Southwest Harbor 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 the United States of America, check out our Southwest Harbor's climate page.
Southwest Harbor Temperature in December
Min Temperature
-5°C (23°F)
Max Temperature
3°C (37°F)
Chance of Rain
56%
Precipitation
142 mm (5.6 in)
Rainy days
17 days
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
pleasant
tolerable
unpleasant
poor
What to Wear in Southwest Harbor in December
We recommend to layer up for chilly conditions in Southwest Harbor 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 Southwest 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 Southwest Harbor's climate page.
See the full Southwest Harbor climate overview or explore weather in the United States of America.
