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.