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Portland weather in December (Maine, United States of America)

What's the typical weather in Portland for December? Wondering about the weather this month? Our guide has all the details you need.

Temperatures

The typical weather for December in Portland includes low temperatures and high snow/rainfall. During December, the winter season is in full swing. Expect daytime highs to reach approximately 4°C, with nighttime lows dipping to around -5°C. Known for its cold temperatures, this month requires warm clothing. Ensure you dress appropriately to stay comfortable.

Precipitation

Portland in December usually receives high snow/rainfall, averaging around 139 mm for the month. Snow/rain is expected on roughly 14 days.

Average sunshine

The area enjoys a moderate level of sunlight, with around 140 hours. It's a good balance between sunny and cloudy days.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Portland. June, July, August and September typically offer the most optimal weather. In contrast, January, February, March, April, November and December tend to have less optimal conditions.

Need inspiration to choose your next destination? Our innovative weather planner helps you discover the perfect getaway tailored to your ideal climate conditions.

 

Portland, monthly averages in December

Min TemperatureMin Temperature -5°C  
Max TemperatureMax Temperature 4°C  
Water TemperatureWater Temperature 7°C  
Chance of RainChance of Rain 48%  
PrecipitationPrecipitation 139 mm  
Rainy daysRainy days 14 days  
HumidityHumidity 70%  
SunshineSunshine 140 hours  
Percentage SunshinePercentage Sunshine 51%  

Where to go 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.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

Wear a base layer in cold weather; this is the #1 thing you can do to increase your overall body temperature. With a water temperature of around 7°C there is no need to bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming
5/10
Cycling
3/10
Walking
3/10
Camping
1/10
Outdoor sports
3/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Portland.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.