Current conditions in Portsmouth: 22°C, with a high of 22°C and a low of 17°C today.

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Portsmouth Weather

7-day weather forecast

Current Weather

Portsmouth

50.80°N, -1.09°E

Last updated

Sep 21, 2026, 8:03 PM

22°
22°

Partly cloudy

High: 22°Low: 17°
08:4821:06
Wind6-11km/h
Humidity57%
Visibility10,000 m
UV Index1
Daily Forecast

Today

Sep 21

17°/22°
6-11km/h

Tue

Sep 22

14°/23°
6-13km/h

Wed

Sep 23

13°/23°
30-44km/h

Thu

Sep 24

8°/20°
24-37km/h

Fri

Sep 25

10°/20°
15-24km/h

Sat

Sep 26

11°/22°
19-30km/h

Sun

Sep 27

10°/20°
22-33km/h
Hourly Forecast
21 Mon00:0014°
7-19km/h
53%
01:0013°
7-17km/h
60%
02:0012°
7-17km/h
67%
03:0012°
6-11km/h
75%
04:0011°
4-9km/h
76%
05:0011°
4-9km/h
78%
06:0010°
2-7km/h
79%
07:0010°
2-7km/h
81%
08:009°
2-7km/h
84%
09:009°
2-7km/h
86%
10:0011°
2-7km/h
76%
UV 1
11:0014°
2-7km/h
66%
UV 3
12:0016°
2-7km/h
56%
UV 4
13:0017°
2-7km/h
51%
UV 5
14:0019°
2-7km/h
47%
UV 5
15:0020°
2-7km/h
42%
UV 6
16:0021°
2-7km/h
43%
UV 5
17:0022°
4-9km/h
45%
UV 5
18:0023°
4-9km/h
46%
UV 4
19:0022°
4-9km/h
51%
UV 3
● 20:0022°
6-11km/h
57%
UV 1
21:0021°
6-11km/h
62%
22:0019°
6-11km/h
71%
23:0017°
4-9km/h
80%
22 Tue00:0015°
4-9km/h
89%
01:0015°
4-11km/h
92%
02:0014°
4-11km/h
96%
03:0014°
6-13km/h
99%
04:0014°
4-11km/h
97%
8,000 m
05:0015°
4-9km/h
96%
06:0015°
2-7km/h
94%
07:0015°
2-7km/h
96%
08:0014°
4-9km/h
97%
8,000 m
09:0014°
4-9km/h
99%
10:0015°
4-9km/h
93%
UV 1
11:0017°
2-7km/h
86%
UV 3
12:0018°
2-7km/h
80%
UV 4
13:0019°
2-7km/h
74%
UV 4
14:0021°
2-7km/h
67%
UV 5
15:0022°
2-7km/h
61%
UV 5
16:0022°
4-9km/h
63%
UV 4
17:0023°
6-11km/h
66%
UV 4
18:0023°
7-13km/h
68%
UV 3
19:0022°
6-11km/h
70%
UV 2
20:0022°
6-11km/h
71%
UV 1
21:0021°
4-9km/h
73%
22:0020°
2-6km/h
79%
23:0020°
0-4km/h
86%
23 Wed00:0019°
0-4km/h
92%
01:0018°
0-4km/h
95%
02:0018°
4-7km/h
97%
03:0017°
6-13km/h
100%
04:0018°
2-7km/h
75%
05:0018°
2-7km/h
75%
06:0016°
2-7km/h
78%
07:0016°
2-7km/h
78%
08:0015°
2-7km/h
77%
09:0015°
2-7km/h
77%
10:0017°
4-9km/h
74%
11:0018°
4-9km/h
72%
12:0020°
6-11km/h
69%
13:0021°
9-17km/h
68%
14:0022°
13-20km/h
68%
15:0023°
17-26km/h
67%
16:0022°
15-31km/h
67%
17:0021°
20-39km/h
66%
18:0020°
0.2mm
30-44km/h
66%
19:0019°
30-43km/h
66%
20:0017°
28-43km/h
66%
21:0016°
28-41km/h
66%
22:0015°
26-39km/h
66%
23:0013°
26-39km/h
66%
24 Thu00:0012°
24-37km/h
66%
01:0011°
22-35km/h
70%
02:0011°
20-31km/h
74%
03:0010°
19-30km/h
78%
04:0010°
19-30km/h
81%
05:009°
20-30km/h
83%
06:009°
20-30km/h
86%
07:009°
20-30km/h
86%
08:008°
20-30km/h
87%
09:008°
20-30km/h
87%
10:0010°
19-28km/h
82%
11:0012°
17-24km/h
76%
12:0014°
15-22km/h
71%
13:0015°
11-19km/h
66%
14:0017°
6-15km/h
62%
15:0018°
6-11km/h
57%
16:0019°
6-11km/h
59%
17:0019°
6-13km/h
60%
18:0020°
7-13km/h
62%
19:0018°
7-13km/h
62%
20:0016°
6-11km/h
63%
21:0014°
6-11km/h
63%
22:0013°
6-11km/h
64%
23:0012°
6-13km/h
66%
25 Fri00:0011°
7-13km/h
67%
01:0011°
7-13km/h
68%
02:0011°
7-13km/h
68%
03:0011°
7-13km/h
69%
04:0011°
7-15km/h
70%
05:0010°
9-15km/h
71%
06:0010°
9-17km/h
72%
07:0010°
11-19km/h
73%
08:0010°
13-20km/h
73%
09:0010°
15-22km/h
74%
10:0012°
15-22km/h
72%
11:0015°
13-20km/h
70%
12:0017°
13-20km/h
68%
13:0018°
13-22km/h
68%
14:0019°
15-22km/h
68%
15:0020°
15-24km/h
68%
16:0020°
13-22km/h
67%
17:0019°
11-19km/h
67%
18:0019°
9-17km/h
66%
19:0017°
7-15km/h
68%
20:0016°
6-11km/h
69%
21:0014°
4-9km/h
71%
22:0013°
6-11km/h
70%
23:0013°
6-11km/h
69%
26 Sat00:0012°
7-13km/h
68%
01:0012°
7-13km/h
68%
02:0011°
7-13km/h
68%
03:0011°
7-13km/h
68%
04:0011°
9-15km/h
72%
05:0011°
9-17km/h
75%
06:0011°
11-19km/h
79%
07:0011°
11-19km/h
80%
08:0012°
11-19km/h
82%
09:0012°
11-19km/h
83%
10:0014°
11-20km/h
79%
11:0017°
13-20km/h
76%
12:0019°
15-22km/h
72%
13:0020°
17-24km/h
70%
14:0021°
17-26km/h
68%
15:0022°
19-28km/h
66%
16:0022°
19-28km/h
66%
17:0021°
19-30km/h
65%
18:0021°
20-30km/h
65%
19:0019°
19-28km/h
67%
20:0018°
17-26km/h
69%
21:0016°
15-24km/h
71%
22:0016°
15-24km/h
76%
23:0015°
15-24km/h
82%
27 Sun00:0015°
15-24km/h
87%
01:0014°
17-26km/h
86%
02:0014°
20-30km/h
85%
03:0013°
22-31km/h
84%
04:0012°
22-31km/h
83%
05:0012°
22-33km/h
82%
06:0011°
22-33km/h
81%
07:0011°
20-30km/h
83%
08:0010°
17-28km/h
86%
09:0010°
15-24km/h
88%
10:0012°
13-20km/h
84%
11:0014°
9-17km/h
79%
12:0016°
7-13km/h
75%
13:0017°
7-13km/h
71%
14:0019°
7-13km/h
67%
15:0020°
7-13km/h
63%
16:0020°
11-17km/h
64%
17:0020°
13-22km/h
64%
18:0020°
17-26km/h
65%
19:0018°
15-24km/h
68%
20:0017°
15-22km/h
72%
21:0015°
13-20km/h
75%
22:0015°
13-20km/h
76%
23:0014°
13-20km/h
78%
Hour by Hour
km/h
%
<9km
UV
00:00
14°
7-19km/h
53%
01:00
13°
7-17km/h
60%
02:00
12°
7-17km/h
67%
03:00
12°
6-11km/h
75%
04:00
11°
4-9km/h
76%
05:00
11°
4-9km/h
78%
06:00
10°
2-7km/h
79%
07:00
10°
2-7km/h
81%
08:00
9°
2-7km/h
84%
09:00
9°
2-7km/h
86%
10:00
11°
2-7km/h
76%
UV 1
11:00
14°
2-7km/h
66%
UV 3
12:00
16°
2-7km/h
56%
UV 4
13:00
17°
2-7km/h
51%
UV 5
14:00
19°
2-7km/h
47%
UV 5
15:00
20°
2-7km/h
42%
UV 6
16:00
21°
2-7km/h
43%
UV 5
17:00
22°
4-9km/h
45%
UV 5
18:00
23°
4-9km/h
46%
UV 4
19:00
22°
4-9km/h
51%
UV 3
20:00
Current
22°
6-11km/h
57%
UV 1
21:00
21°
6-11km/h
62%
22:00
19°
6-11km/h
71%
23:00
17°
4-9km/h
80%

Latest Model Run: 2026-09-21 00:00 UTC

Last updated: Sep 21, 2026, 8:03 PM

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