Dailymet

Weather Portsmouth: Current forecast

Portsmouth / United Kingdom

12.1 °C
Feels like 4.4 °C
Min 11 °C / Max 14 °C
Weather Portsmouth: Patchy rain possible, 12 °C Patchy rain possible
29.5 mph W
Wind
39.6 mph W
Gusts
1006 hPa
Pressure
0.1 mm
Precipitation
66 %
Humidity
0.6
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass None
Mugwort None
Ragweed None
07:37 / 18:00
Sunrise / Sunset
16:17 / 02:06
Moonrise / Moonset
Waxing Moon (86 %)
Moon phase

Updated: Oct 21, 2026, 16:45 CEST Oct 21, 2026, 15:45 BST

Today's Summary

In Portsmouth the weather today is patchy rain possible. The thermometer currently shows 12.1°C. With wind from the west, it feels noticeably colder, around 4.4°C. Take an umbrella with you today – you'll probably need it. During the day temperatures will range between 10.8°C and 13.8°C.

Hourly forecast – Portsmouth, today

Oct 21, 16:00
12 °C
Clear
Portsmouth Oct 21, 16:00: Clear, 12 °C
Oct 21, 17:00
12 °C
Clear
Portsmouth Oct 21, 17:00: Clear, 12 °C
Oct 21, 18:00
12 °C
Patchy rain possible
Portsmouth Oct 21, 18:00: Patchy rain possible, 12 °C
Oct 21, 19:00
12 °C
Patchy rain possible
Portsmouth Oct 21, 19:00: Patchy rain possible, 12 °C
Oct 21, 20:00
12 °C
Patchy rain possible
Portsmouth Oct 21, 20:00: Patchy rain possible, 12 °C
Oct 21, 21:00
13 °C
Light drizzle
Portsmouth Oct 21, 21:00: Light drizzle, 13 °C
Oct 21, 22:00
12 °C
Moderate rain
Portsmouth Oct 21, 22:00: Moderate rain, 12 °C
Oct 21, 23:00
13 °C
Light rain
Portsmouth Oct 21, 23:00: Light rain, 13 °C
Oct 22, 00:00
13 °C
Moderate or heavy rain with thunder
Portsmouth Oct 22, 00:00: Moderate or heavy rain with thunder, 13 °C
Oct 22, 01:00
13 °C
Light rain shower
Portsmouth Oct 22, 01:00: Light rain shower, 13 °C
Oct 22, 02:00
13 °C
Patchy light drizzle
Portsmouth Oct 22, 02:00: Patchy light drizzle, 13 °C
Oct 22, 03:00
13 °C
Patchy rain possible
Portsmouth Oct 22, 03:00: Patchy rain possible, 13 °C
Oct 22, 04:00
13 °C
Patchy rain possible
Portsmouth Oct 22, 04:00: Patchy rain possible, 13 °C
Oct 22, 05:00
12 °C
Clear
Portsmouth Oct 22, 05:00: Clear, 12 °C
Oct 22, 06:00
12 °C
Sunny
Portsmouth Oct 22, 06:00: Sunny, 12 °C
Oct 22, 07:00
12 °C
Sunny
Portsmouth Oct 22, 07:00: Sunny, 12 °C
Oct 22, 08:00
12 °C
Sunny
Portsmouth Oct 22, 08:00: Sunny, 12 °C
Oct 22, 09:00
13 °C
Overcast
Portsmouth Oct 22, 09:00: Overcast, 13 °C
Oct 22, 10:00
14 °C
Overcast
Portsmouth Oct 22, 10:00: Overcast, 14 °C
Oct 22, 11:00
14 °C
Cloudy
Portsmouth Oct 22, 11:00: Cloudy, 14 °C
Oct 22, 12:00
14 °C
Cloudy
Portsmouth Oct 22, 12:00: Cloudy, 14 °C
Oct 22, 13:00
15 °C
Overcast
Portsmouth Oct 22, 13:00: Overcast, 15 °C
Oct 22, 14:00
15 °C
Overcast
Portsmouth Oct 22, 14:00: Overcast, 15 °C
Oct 22, 15:00
14 °C
Overcast
Portsmouth Oct 22, 15:00: Overcast, 14 °C
Time
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
Portsmouth Oct 21, 16:00: Clear
Portsmouth Oct 21, 17:00: Clear
Portsmouth Oct 21, 18:00: Patchy rain possible
Portsmouth Oct 21, 19:00: Patchy rain possible
Portsmouth Oct 21, 20:00: Patchy rain possible
Portsmouth Oct 21, 21:00: Light drizzle
Portsmouth Oct 21, 22:00: Moderate rain
Portsmouth Oct 21, 23:00: Light rain
Portsmouth Oct 22, 00:00: Moderate or heavy rain with thunder
Portsmouth Oct 22, 01:00: Light rain shower
Portsmouth Oct 22, 02:00: Patchy light drizzle
Portsmouth Oct 22, 03:00: Patchy rain possible
Portsmouth Oct 22, 04:00: Patchy rain possible
Portsmouth Oct 22, 05:00: Clear
Portsmouth Oct 22, 06:00: Sunny
Portsmouth Oct 22, 07:00: Sunny
Portsmouth Oct 22, 08:00: Sunny
Portsmouth Oct 22, 09:00: Overcast
Portsmouth Oct 22, 10:00: Overcast
Portsmouth Oct 22, 11:00: Cloudy
Portsmouth Oct 22, 12:00: Cloudy
Portsmouth Oct 22, 13:00: Overcast
Portsmouth Oct 22, 14:00: Overcast
Portsmouth Oct 22, 15:00: Overcast
Temperature (°C)
Chance of rain (%)
4
5
22
15
17
35
81
78
84
56
50
32
21
7
7
8
7
18
15
12
12
13
14
16
Precipitation
—
—
0.1 mm
0 mm
0 mm
0.2 mm
2.6 mm
2.4 mm
3.4 mm
0.6 mm
0.7 mm
0.2 mm
0 mm
—
—
—
—
—
—
—
—
—
—
—
Wind (mph)
W
25
W
24
W
24
W
24
W
21
WSW
22
WSW
21
WSW
37
WSW
29
WSW
35
W
27
W
24
W
24
W
21
W
19
W
18
W
17
W
17
W
16
W
17
WSW
15
WSW
14
SW
12
SSW
12
Pressure (hPa)
1009
1010
1010
1011
1011
1010
1009
1008
1007
1007
1007
1007
1008
1008
1009
1010
1011
1011
1011
1011
1011
1010
1010
1009
Humidity (%)
63 %
64 %
65 %
67 %
69 %
70 %
85 %
82 %
87 %
83 %
79 %
77 %
77 %
73 %
74 %
75 %
73 %
68 %
64 %
59 %
57 %
56 %
60 %
64 %
Cloud cover (%)
5 %
5 %
87 %
84 %
88 %
91 %
100 %
100 %
100 %
88 %
58 %
77 %
85 %
5 %
5 %
8 %
5 %
100 %
93 %
86 %
86 %
100 %
100 %
100 %

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 8.2°C at night, with daytime highs up to 16.8°C.

Date
Oct 21
Oct 22
Oct 23
Oct 24
Oct 25
Oct 26
Oct 27
Oct 28
Oct 29
Oct 30
Oct 31
Nov 1
Nov 2
Nov 3
Portsmouth October 21, 2026: Patchy rain possible
Portsmouth October 22, 2026: Overcast
Portsmouth October 23, 2026: Light rain shower
Portsmouth October 24, 2026: Overcast
Portsmouth October 25, 2026: Sunny
Portsmouth October 26, 2026: Patchy rain possible
Portsmouth October 27, 2026: Patchy rain possible
Portsmouth October 28, 2026: Sunny
Portsmouth October 29, 2026: Overcast
Portsmouth October 30, 2026: Overcast
Portsmouth October 31, 2026: Sunny
Portsmouth November 1, 2026: Sunny
Portsmouth November 2, 2026: Sunny
Portsmouth November 3, 2026: Sunny
Temperature (°C)
Chance of rain (%)
82
82
86
86
57
79
79
8
19
11
9
7
10
17
Precipitation
11 mm
16.7 mm
12.1 mm
12.6 mm
1.4 mm
2.6 mm
6.4 mm
—
0 mm
—
—
—
—
0.1 mm
Wind max (mph)
31
37
48
36
29
23
33
15
15
10
16
11
9
14
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
October 21, 2026 Portsmouth October 21, 2026: Patchy rain possible Patchy rain possible 11 °C 14 °C 07:37 18:00 16:17 02:06 Waxing Moon (86 %)
October 22, 2026 Portsmouth October 22, 2026: Overcast Overcast 12 °C 15 °C 07:39 17:58 16:28 03:17 Waxing Moon (92 %)
October 23, 2026 Portsmouth October 23, 2026: Light rain shower Light rain shower 9 °C 15 °C 07:40 17:56 16:40 04:27 Full Moon (97 %)
October 24, 2026 Portsmouth October 24, 2026: Overcast Overcast 10 °C 16 °C 07:42 17:54 16:52 05:39 Full Moon (100 %)
October 25, 2026 Portsmouth October 25, 2026: Sunny Sunny 11 °C 17 °C 06:44 16:52 16:06 05:54 Full Moon (100 %)
October 26, 2026 Portsmouth October 26, 2026: Patchy rain possible Patchy rain possible 12 °C 17 °C 06:45 16:50 16:24 07:12 Full Moon (98 %)
October 27, 2026 Portsmouth October 27, 2026: Patchy rain possible Patchy rain possible 11 °C 17 °C 06:47 16:48 16:48 08:33 Waning Moon (94 %)
October 28, 2026 Portsmouth October 28, 2026: Sunny Sunny 10 °C 14 °C 06:49 16:46 17:22 09:54 Waning Moon (88 %)
October 29, 2026 Portsmouth October 29, 2026: Overcast Overcast 13 °C 14 °C 06:51 16:44 18:09 11:09 Waning Moon (80 %)
October 30, 2026 Portsmouth October 30, 2026: Overcast Overcast 12 °C 14 °C 06:52 16:43 19:14 12:11 Waning Moon (71 %)
October 31, 2026 Portsmouth October 31, 2026: Sunny Sunny 9 °C 13 °C 06:54 16:41 20:32 12:58 Last Quarter (61 %)
November 1, 2026 Portsmouth November 1, 2026: Sunny Sunny 8 °C 13 °C 06:56 16:39 21:58 13:31 Last Quarter (50 %)
November 2, 2026 Portsmouth November 2, 2026: Sunny Sunny 9 °C 13 °C 06:57 16:37 23:25 13:55 Last Quarter (40 %)
November 3, 2026 Portsmouth November 3, 2026: Sunny Sunny 9 °C 14 °C 06:59 16:35 Does not rise today 14:13 Waning Crescent (30 %)
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