Portsmouth Weather in January

Thinking of visiting Portsmouth in January? Expect low temperatures reaching 10°C (50°F) during the day, dropping to 4°C (39°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Portsmouth in January

Analyzing past climate data, one can expect approximately 17 days of rain, averaging 82 mm (3.2 in). Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.

Temperature in Portsmouth in January

Temperatures in Portsmouth in January top out at 10°C (50°F) and drop to 4°C (39°F) overnight. The winter season takes place during January. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. With lows around 4°C (39°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Portsmouth in January

The month is characterized by fewer sunny days, with roughly 63 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.

If you prefer dry days with pleasant 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 Kingdom, check out our Portsmouth's climate page.

Portsmouth Temperature in January

Min Temperature 4°C (39°F)  

Max Temperature 10°C (50°F)  

Chance of Rain 56%  

Precipitation 82 mm (3.2 in)  

Rainy days 17 days  

Humidity 91% *  

Sunshine 63 hours *  

Percentage Sunshine 17% *  

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

What to Wear in Portsmouth in January

Cold weather calls for smart layering in January. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.

What To Do in Portsmouth in January

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

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

4/10

Outdoor sports

4/10

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.