Portsmouth Weather in December

Portsmouth in December sees low daytime temperatures of 10°C (50°F) and nighttime lows of 5°C (41°F). Rainfall is fairly high this month at around 88 mm (3.5 in), so pack a rain jacket to stay dry.

Rainfall in Portsmouth in December

You can typically expect 16 days of rain this month, averaging around 88 mm (3.5 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Portsmouth in December

In December, Portsmouth sees low temperatures, with highs of 10°C (50°F). Nights drop to around 5°C (41°F). December is a notable month of the winter season. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. Nights fall to 5°C (41°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Portsmouth in December

This month sees fewer sunny days, with about 54 hours of sunshine, perfect for those who enjoy cooler temperatures.

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

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• January
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For a detailed overview over the year and the best time to visit the United Kingdom, check out our Portsmouth's climate page.

Portsmouth Temperature in December

Min Temperature 5°C (41°F)  

Max Temperature 10°C (50°F)  

Chance of Rain 52%  

Precipitation 88 mm (3.5 in)  

Rainy days 16 days  

Humidity 91% *  

Sunshine 54 hours *  

Percentage Sunshine 16% *  

* Data from: Southampton, the United Kingdom (25 KM, 15 Miles).

What to Wear in Portsmouth in December

The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.

What To Do in Portsmouth in December

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

Swimming

4/10

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 Kingdom, 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 Kingdom.