Portsmouth weather live forecast

Today's maximum temperature in Portsmouth is expected to be 66°F. Select a day from the live weather forecast for Portsmouth, England, UK for more weather parameters.

Friday
22nd Aug
66

55

6

4
Saturday
23rd Aug
72

63

3

4
Sunday
24th Aug
70

61

9

5
Monday
25th Aug
72

61

10

5
Tuesday
26th Aug
70

61

2

4

5-day weather forecast updated at 04:02 on Friday 22nd 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 Friday 22nd August 2025

Expect broken clouds in Portsmouth, England with a maximum temperature of 66°F, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the south-west.

66
°F maximum temperature
55
°F minimum temperature
broken clouds
6
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
11
mph wind from SW

Portsmouth weather for Saturday 23rd August 2025

Expect broken clouds in Portsmouth, England with a maximum temperature of 72°F, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-east.

72
°F maximum temperature
63
°F minimum temperature
broken clouds
3
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
72
°F wind chill
9
mph wind from SE

Portsmouth weather for Sunday 24th August 2025

Expect scattered clouds in Portsmouth, England with a maximum temperature of 70°F, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-east.

70
°F maximum temperature
61
°F minimum temperature
scattered clouds
9
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
70
°F wind chill
9
mph wind from SE

Portsmouth weather for Monday 25th August 2025

Expect scattered clouds in Portsmouth, England with a maximum temperature of 72°F, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 12 mph from the south-east.

72
°F maximum temperature
61
°F minimum temperature
scattered clouds
10
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
12
mph wind from SE

Portsmouth weather for Tuesday 26th August 2025

Expect mostly cloudy with light rain in Portsmouth, England with a maximum temperature of 70°F, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 38% chance of some rain and a moderate breeze of 15 mph from the south-west.