Portsmouth weather live forecast

Today's maximum temperature in Portsmouth is expected to be 22°C. Select a day from the live weather forecast for Portsmouth, England, UK for more weather parameters.

Sunday
24th Aug
22

16

10

5
Monday
25th Aug
23

17

11

6
Tuesday
26th Aug
22

17

5

5
Wednesday
27th Aug
20

15

4

4
Thursday
28th Aug
18

14

7

5

5-day weather forecast updated at 04:02 on Sunday 24th August 2025 GMT

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The 5-day weather forecast for England (Portsmouth) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Portsmouth weather forecast by day

Below are the detailed weather forecasts for Portsmouth for the next 5 days.

Portsmouth weather for Sunday 24th August 2025

Expect scattered clouds in Portsmouth, England with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south-east.

22
°C maximum temperature
16
°C minimum temperature
scattered clouds
10
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
19
kph wind from SE

Portsmouth weather for Monday 25th August 2025

Expect scattered clouds in Portsmouth, England with a maximum temperature of 23°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-east.

23
°C maximum temperature
17
°C minimum temperature
scattered clouds
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
20
kph wind from SE

Portsmouth weather for Tuesday 26th August 2025

Expect broken clouds in Portsmouth, England with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the south-west.

22
°C maximum temperature
17
°C minimum temperature
broken clouds
5
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
28
kph wind from SW

Portsmouth weather for Wednesday 27th August 2025

Expect mostly cloudy with rain in Portsmouth, England with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 67% chance of some rain and a moderate breeze of 26 kph from the south-west.

20
°C maximum temperature
15
°C minimum temperature
mostly cloudy with rain
4
hours of sunshine
4
UV index (Moderate)
67
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
26
kph wind from SW

Portsmouth weather for Thursday 28th August 2025

Expect sunshine and showers in Portsmouth, England with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 57% chance of some rain and a moderate breeze of 27 kph from the south-west.