- Save up to 20% on selected hotels with coupon offer
- Redeem at 8:00am till 11:59pm on 16th & 23rd Jan
- Travel before 30th June 2020 (inclusive)
Portland weather in December 2020
- 22°C max day temperature
- 1212 days with some rainfall
- -8-8°C min night temperature
- 99 hours of daylight per day
- 0No heat & humidity
- 117117 mm of monthly rainfall
- 11 (Low) UV index
- 77°C sea temperature
The December weather guide for Portland, Maine shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
How cold is it in Portland in December?
Daytime temperatures usually reach 2°C in Portland in December, falling to -8°C at night.
How sunny is it in Portland in December?
There are normally 4 hours of bright sunshine each day in Portland in December - that's 48% of daylight hours.
Is the sea cold around Portland in December?
The average sea temperature around Portland in December is 7°C.
Does it rain in Portland in December?
There are usually 12 days with some rain in Portland in December and the average monthly rainfall is 117mm.
Portland sunrise & sunset times for December 2020
Browse the sunrise & sunset times for Portland in December 2020. Select a month to view Portland sunrise & sunset times for the next twelve months.
|Date||Sunrise times||Sunset times|
|Tuesday, 1st December 2020||06:55||16:05|
|Wednesday, 16th December 2020||07:09||16:05|
|Thursday, 31st December 2020||07:14||16:14|
- Win £500 Travel Up voucher put towards your next holiday
- Enter into the competition to be in with a chance
- Min spend of £1000. Holiday booking for 2 people or more
Metric (°C / mm) | Imperial (°F / inches)
Discover more about the USA
Where's warm in Maine in December?
Below are average maximum temperatures at popular destinations in Maine in December. Select a destination to see more weather parameters.
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Popular travel offers
*affiliate links: find out how we are funded and why this helps us remain free to use.