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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.
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).
Portsmouth Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Portsmouth - and find the best time to visit.
Best Places in the United Kingdom in May
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
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.
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Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports10/10
Portsmouth 3-Day Forecast
More climate data for Portsmouth
Temperature Rainfall Sunshine Humidity
See the full Portsmouth climate overview or explore weather in the United Kingdom.
Popular in May
Where to go in May - average daytime high across popular destinations.
London
18°C (64°F) Bath17°C (63°F) Manchester
17°C (63°F) York17°C (63°F) Torquay15°C (59°F) Glasgow15°C (59°F) Edinburgh15°C (59°F) Blackpool14°C (57°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Hike the South West Coast Path
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