Portsmouth weather in December (New Hampshire, United States of America)

Curious about the climate in Portsmouth this December? Check out this detailed guide to the month’s weather conditions.

Temperatures

Typically, December in Portsmouth includes low temperatures and high snow/rainfall. Experience the winter season in December. You can expect daytime temperatures to reach around 5°C, while the nights will see a decline to about -4°C. This month is known for its biting cold, so make sure to dress warmly. Proper preparation can help you stay cozy.

Precipitation

Portsmouth in December usually receives high snow/rainfall, averaging around 128 mm for the month. Expect around 14 days of snow/rain based on historical data.

Average sunshine

The month experiences a moderate amount of sunlight, with 134 hours hours. A nice balance between sunshine and clouds.

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

For an in-depth look at the yearly conditions, visit our specialized Portsmouth climate page with graphs.

 

Portsmouth, monthly averages in December

Min Temperature -4°C  

Max Temperature 5°C  

Chance of Rain 45%  

Precipitation 128 mm  

Rainy days 14 days  

Humidity 72% *  

Sunshine 134 hours *  

Percentage Sunshine *  

Data from: Concord, the United States of America (64 KM, 40 Miles).

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.

Weather conditions Weather

Temperatures

Precipitation

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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.

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 Portsmouth.

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.