South Portland Weather in December
December in South Portland averages 4°C (39°F) during the day and -5°C (23°F) at night. Quite a bit of snow/rainfall is typical this month, with around 140 mm (5.5 in) on average. An umbrella is a good idea.
Rainfall in South Portland in December
Looking at the last 30 years, the data shows about 15 days with snow/rain, averaging 140 mm (5.5 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 South Portland in December
December in South Portland brings typical temperatures with highs around 4°C (39°F) and lows of -5°C (23°F). During December, the winter season is in full swing. Expect a distinctly cold feel throughout the day, not just overnight. Nights are well below freezing at -5°C (23°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation. Expect freezing temperatures this month, so ensure you have plenty of warm clothing. It's important to be prepared.
Sunshine in South Portland in December
With about 140 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.
Average water temperature in December
At 7°C (45°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for South Portland.
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 South Portland's climate page.
South Portland Temperature in December
Min Temperature
-5°C (23°F)
Max Temperature
4°C (39°F)
Water Temperature
7°C (45°F) *
Chance of Rain
49%
Precipitation
140 mm (5.5 in)
Rainy days
15 days
Humidity
70% *
Sunshine
140 hours *
Percentage Sunshine
51% *
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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tolerable
unpleasant
poor
What to Wear in South Portland in December
Dress warmly and in layers for your trip to South Portland 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. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 7°C (45°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in South Portland 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 South Portland's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full South Portland climate overview or explore weather in the United States of America.
