Portsmouth Weather in May

With daytime temperatures of 17°C (63°F) and nighttime lows of 10°C (50°F), May in Portsmouth brings moderate temperatures during the day. Some rainfall is to be expected during the month.

Rainfall in Portsmouth in May

This month experiences about 12 days of rain according to historical data, averaging 58 mm (2.3 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Portsmouth in May

Temperatures in Portsmouth in May top out at 17°C (63°F) and drop to 10°C (50°F) overnight. Conditions are often most pleasant around the middle of the day. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Portsmouth in May

The city usually sees around 215 hours of sunlight, indicating many sunny days — a great month for sightseeing.

If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Portsmouth.

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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 May

Min Temperature 10°C (50°F)  

Max Temperature 17°C (63°F)  

Chance of Rain 41%  

Precipitation 58 mm (2.3 in)  

Rainy days 12 days  

Humidity 74% *  

Sunshine 215 hours *  

Percentage Sunshine 44% *  

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

What to Wear in Portsmouth in May

For Portsmouth in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Portsmouth in May

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

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

10/10

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.