Portsmouth Weather in January

With daytime temperatures of 10°C (50°F) and nighttime lows of 0°C (32°F), January in Portsmouth brings low temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 77 mm (3 in) falls on average.

Rainfall in Portsmouth in January

Based on our climate data of the past 30 years, about 10 days of rain are anticipated, with 77 mm (3 in) on average. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Portsmouth in January

If you're visiting Portsmouth in January, expect highs of 10°C (50°F) and overnight lows around 0°C (32°F). This month falls in the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. Nights fall to 0°C (32°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep. The temperatures in January are typically the coolest of the year.

Sunshine in Portsmouth in January

The month brings about 173 hours of sunlight, offering a comfortable mix of sun and overcast.

If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit Portsmouth. Our weather planner can help you explore destinations with more pleasant weather conditions.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Portsmouth's climate page.

Portsmouth Temperature in January

Min Temperature 0°C (32°F)  

Max Temperature 10°C (50°F)  

Chance of Rain 32%  

Precipitation 77 mm (3 in)  

Rainy days 10 days  

Humidity 66% *  

Sunshine 173 hours *  

Percentage Sunshine 56% *  

* Data from: Hampton, the United States of America (22 KM, 13 Miles).

What to Wear in Portsmouth in January

Pack for changing conditions in Portsmouth in January. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Portsmouth in January

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

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Portsmouth's climate page.

More climate data for Portsmouth

Temperature Rainfall Sunshine Humidity

See the full Portsmouth climate overview or explore weather in the United States of America.