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Weather Portsmouth: Current forecast

Portsmouth / United Kingdom

19.2 °C
Feels like 19.2 °C
Min 17 °C / Max 22 °C
Weather Portsmouth: Sunny, 19 °C Sunny
11.9 km/h S
Wind
13.9 km/h S
Gusts
1024 hPa
Pressure
0 mm
Precipitation
78 %
Humidity
2.1
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass High
Mugwort High
Ragweed None
05:18 / 21:03
Sunrise / Sunset
16:56 / Does not set today
Moonrise / Moonset
Waxing Moon (74 %)
Moon phase

Updated: Jul 23, 2026, 10:21 CEST Jul 23, 2026, 9:21 BST

Today's Summary

In Portsmouth the weather today is sunny. The thermometer currently shows 19.2°C. Pack a light jacket for the evening. During the day temperatures will range between 17°C and 22.3°C.

Hourly forecast – Portsmouth, today

Jul 23, 09:00
21 °C
Partly cloudy
Portsmouth Jul 23, 09:00: Partly cloudy, 21 °C
Jul 23, 10:00
22 °C
Partly cloudy
Portsmouth Jul 23, 10:00: Partly cloudy, 22 °C
Jul 23, 11:00
21 °C
Sunny
Portsmouth Jul 23, 11:00: Sunny, 21 °C
Jul 23, 12:00
21 °C
Partly cloudy
Portsmouth Jul 23, 12:00: Partly cloudy, 21 °C
Jul 23, 13:00
22 °C
Partly cloudy
Portsmouth Jul 23, 13:00: Partly cloudy, 22 °C
Jul 23, 14:00
22 °C
Partly cloudy
Portsmouth Jul 23, 14:00: Partly cloudy, 22 °C
Jul 23, 15:00
22 °C
Sunny
Portsmouth Jul 23, 15:00: Sunny, 22 °C
Jul 23, 16:00
22 °C
Sunny
Portsmouth Jul 23, 16:00: Sunny, 22 °C
Jul 23, 17:00
22 °C
Sunny
Portsmouth Jul 23, 17:00: Sunny, 22 °C
Jul 23, 18:00
21 °C
Sunny
Portsmouth Jul 23, 18:00: Sunny, 21 °C
Jul 23, 19:00
19 °C
Sunny
Portsmouth Jul 23, 19:00: Sunny, 19 °C
Jul 23, 20:00
18 °C
Clear
Portsmouth Jul 23, 20:00: Clear, 18 °C
Jul 23, 21:00
18 °C
Partly cloudy
Portsmouth Jul 23, 21:00: Partly cloudy, 18 °C
Jul 23, 22:00
18 °C
Partly cloudy
Portsmouth Jul 23, 22:00: Partly cloudy, 18 °C
Jul 23, 23:00
18 °C
Clear
Portsmouth Jul 23, 23:00: Clear, 18 °C
Jul 24, 00:00
18 °C
Clear
Portsmouth Jul 24, 00:00: Clear, 18 °C
Jul 24, 01:00
18 °C
Clear
Portsmouth Jul 24, 01:00: Clear, 18 °C
Jul 24, 02:00
18 °C
Clear
Portsmouth Jul 24, 02:00: Clear, 18 °C
Jul 24, 03:00
17 °C
Clear
Portsmouth Jul 24, 03:00: Clear, 17 °C
Jul 24, 04:00
17 °C
Sunny
Portsmouth Jul 24, 04:00: Sunny, 17 °C
Jul 24, 05:00
19 °C
Sunny
Portsmouth Jul 24, 05:00: Sunny, 19 °C
Jul 24, 06:00
20 °C
Sunny
Portsmouth Jul 24, 06:00: Sunny, 20 °C
Jul 24, 07:00
21 °C
Sunny
Portsmouth Jul 24, 07:00: Sunny, 21 °C
Jul 24, 08:00
22 °C
Sunny
Portsmouth Jul 24, 08:00: Sunny, 22 °C
Time
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
Portsmouth Jul 23, 09:00: Partly cloudy
Portsmouth Jul 23, 10:00: Partly cloudy
Portsmouth Jul 23, 11:00: Sunny
Portsmouth Jul 23, 12:00: Partly cloudy
Portsmouth Jul 23, 13:00: Partly cloudy
Portsmouth Jul 23, 14:00: Partly cloudy
Portsmouth Jul 23, 15:00: Sunny
Portsmouth Jul 23, 16:00: Sunny
Portsmouth Jul 23, 17:00: Sunny
Portsmouth Jul 23, 18:00: Sunny
Portsmouth Jul 23, 19:00: Sunny
Portsmouth Jul 23, 20:00: Clear
Portsmouth Jul 23, 21:00: Partly cloudy
Portsmouth Jul 23, 22:00: Partly cloudy
Portsmouth Jul 23, 23:00: Clear
Portsmouth Jul 24, 00:00: Clear
Portsmouth Jul 24, 01:00: Clear
Portsmouth Jul 24, 02:00: Clear
Portsmouth Jul 24, 03:00: Clear
Portsmouth Jul 24, 04:00: Sunny
Portsmouth Jul 24, 05:00: Sunny
Portsmouth Jul 24, 06:00: Sunny
Portsmouth Jul 24, 07:00: Sunny
Portsmouth Jul 24, 08:00: Sunny
Temperature (°C)
Chance of rain (%)
5
5
5
6
7
5
4
4
4
5
7
9
9
9
9
9
9
9
10
9
7
5
4
3
Precipitation
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Wind (km/h)
S
14
S
15
S
17
S
18
S
19
S
18
SSW
17
SSW
17
SW
14
SW
13
SW
11
SSW
9
SSW
9
SSW
10
SSW
10
SW
11
SW
10
SW
10
SW
10
WSW
9
WSW
8
WSW
10
W
10
WSW
10
Pressure (hPa)
1024
1024
1024
1024
1023
1023
1022
1022
1022
1021
1022
1022
1022
1022
1022
1021
1021
1021
1020
1020
1020
1020
1020
1020
Humidity (%)
61 %
61 %
62 %
62 %
61 %
59 %
59 %
59 %
61 %
64 %
72 %
75 %
75 %
75 %
76 %
76 %
76 %
77 %
77 %
76 %
70 %
64 %
60 %
55 %
Cloud cover (%)
27 %
25 %
15 %
28 %
47 %
25 %
19 %
17 %
16 %
14 %
16 %
23 %
27 %
26 %
24 %
20 %
19 %
18 %
19 %
19 %
19 %
19 %
18 %
14 %

14-day weather forecast – Portsmouth

14-day trend for Portsmouth: Temperatures stay fairly stable over the period with no big swings. Lows can drop to around 13.2°C at night, with daytime highs up to 28.8°C.

Date
Jul 23
Jul 24
Jul 25
Jul 26
Jul 27
Jul 28
Jul 29
Jul 30
Jul 31
Aug 1
Aug 2
Aug 3
Aug 4
Aug 5
Portsmouth July 23, 2026: Sunny
Portsmouth July 24, 2026: Sunny
Portsmouth July 25, 2026: Sunny
Portsmouth July 26, 2026: Patchy rain possible
Portsmouth July 27, 2026: Sunny
Portsmouth July 28, 2026: Sunny
Portsmouth July 29, 2026: Sunny
Portsmouth July 30, 2026: Sunny
Portsmouth July 31, 2026: Sunny
Portsmouth August 1, 2026: Partly cloudy
Portsmouth August 2, 2026: Sunny
Portsmouth August 3, 2026: Sunny
Portsmouth August 4, 2026: Sunny
Portsmouth August 5, 2026: Partly cloudy
Temperature (°C)
Chance of rain (%)
7
4
4
51
5
3
2
3
3
49
6
82
36
9
Precipitation
—
—
—
0.7 mm
—
—
—
—
—
0.9 mm
0 mm
18.8 mm
0.6 mm
0 mm
Wind max (km/h)
19
21
29
27
26
16
21
26
18
37
34
47
29
9
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
July 23, 2026 Portsmouth July 23, 2026: Sunny Sunny 17 °C 22 °C 05:18 21:03 16:56 Does not set today Waxing Moon (74 %)
July 24, 2026 Portsmouth July 24, 2026: Sunny Sunny 17 °C 25 °C 05:19 21:01 18:06 00:26 Waxing Moon (82 %)
July 25, 2026 Portsmouth July 25, 2026: Sunny Sunny 15 °C 25 °C 05:21 21:00 19:06 01:03 Waxing Moon (90 %)
July 26, 2026 Portsmouth July 26, 2026: Patchy rain possible Patchy rain possible 18 °C 22 °C 05:22 20:59 19:54 01:51 Waxing Moon (95 %)
July 27, 2026 Portsmouth July 27, 2026: Sunny Sunny 15 °C 23 °C 05:23 20:57 20:29 02:51 Full Moon (99 %)
July 28, 2026 Portsmouth July 28, 2026: Sunny Sunny 16 °C 24 °C 05:25 20:56 20:54 03:59 Full Moon (100 %)
July 29, 2026 Portsmouth July 29, 2026: Sunny Sunny 18 °C 29 °C 05:26 20:54 21:14 05:11 Full Moon (99 %)
July 30, 2026 Portsmouth July 30, 2026: Sunny Sunny 18 °C 26 °C 05:28 20:53 21:29 06:23 Waning Moon (96 %)
July 31, 2026 Portsmouth July 31, 2026: Sunny Sunny 16 °C 25 °C 05:29 20:51 21:41 07:34 Waning Moon (91 %)
August 1, 2026 Portsmouth August 1, 2026: Partly cloudy Partly cloudy 17 °C 21 °C 05:31 20:50 21:52 08:44 Waning Moon (83 %)
August 2, 2026 Portsmouth August 2, 2026: Sunny Sunny 16 °C 21 °C 05:32 20:48 22:03 09:54 Waning Moon (75 %)
August 3, 2026 Portsmouth August 3, 2026: Sunny Sunny 14 °C 19 °C 05:33 20:47 22:15 11:05 Last Quarter (65 %)
August 4, 2026 Portsmouth August 4, 2026: Sunny Sunny 13 °C 20 °C 05:35 20:45 22:28 12:18 Last Quarter (55 %)
August 5, 2026 Portsmouth August 5, 2026: Partly cloudy Partly cloudy 16 °C 22 °C 05:36 20:43 22:45 13:35 Last Quarter (44 %)
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