Current conditions in Portsmouth: 12°C, with a high of 12°C and a low of 10°C today.

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Portsmouth Weather

7-day weather forecast

Current Weather

Portsmouth

50.80°N, -1.09°E

Last updated

Oct 17, 2026, 7:32 PM

12°
10°

Mostly cloudy

High: 12°Low: 10°
09:2920:09
Wind15-24km/h
Humidity63%
Visibility10,000 m
UV Index0
Daily Forecast

Today

Oct 17

10°/12°
15-24km/h

Sun

Oct 18

6°/15°
28-50km/h

Mon

Oct 19

6°/14°
24-48km/h

Tue

Oct 20

10°/14°
31-46km/h

Wed

Oct 21

7°/12°
41-56km/h

Thu

Oct 22

7°/16°
59-78km/h

Fri

Oct 23

8°/15°
63-81km/h
Hourly Forecast
17 Sat00:0011°
26-50km/h
57%
01:0010°
24-48km/h
61%
02:0010°
22-48km/h
66%
03:0010°
24-37km/h
77%
04:009°
19-30km/h
81%
05:007°
15-22km/h
85%
06:006°
9-15km/h
89%
07:006°
9-15km/h
89%
08:005°
9-15km/h
88%
09:005°
9-15km/h
88%
10:007°
9-17km/h
82%
UV 1
11:008°
11-17km/h
76%
UV 2
12:0010°
11-19km/h
70%
UV 3
13:0011°
13-24km/h
62%
UV 4
14:0013°
17-28km/h
55%
UV 4
15:0014°
19-33km/h
47%
UV 5
16:0014°
20-35km/h
49%
UV 4
17:0014°
22-39km/h
50%
UV 2
18:0014°
24-41km/h
52%
UV 1
19:0013°
19-31km/h
57%
UV 1
● 20:0012°
15-24km/h
63%
21:0011°
9-15km/h
68%
22:0010°
9-15km/h
67%
23:0010°
9-15km/h
66%
18 Sun00:009°
9-15km/h
65%
01:008°
9-15km/h
67%
02:008°
9-15km/h
70%
03:007°
9-15km/h
72%
04:007°
11-17km/h
74%
05:006°
11-19km/h
77%
06:006°
13-20km/h
79%
07:006°
15-22km/h
79%
08:007°
15-22km/h
79%
09:007°
17-24km/h
79%
10:008°
19-31km/h
75%
UV 1
11:009°
22-41km/h
71%
UV 2
12:0010°
24-48km/h
67%
UV 3
13:0011°
24-46km/h
61%
UV 3
14:0013°
24-46km/h
54%
UV 4
15:0014°
26-44km/h
48%
UV 4
16:0014°
26-44km/h
45%
UV 4
17:0015°
26-44km/h
42%
UV 3
18:0015°
26-44km/h
39%
UV 3
19:0014°
26-46km/h
42%
UV 2
20:0013°
28-48km/h
44%
UV 1
21:0012°
28-50km/h
47%
22:0011°
26-50km/h
56%
23:0011°
0.1mm
26-48km/h
66%
19 Mon00:0010°
0.1-0.8mm
24-48km/h
75%
01:0010°
19-37km/h
80%
02:009°
15-26km/h
85%
03:009°
0.2-0.5mm
9-15km/h
90%
04:009°
19-28km/h
83%
05:009°
11-20km/h
83%
06:007°
13-20km/h
88%
07:007°
15-22km/h
85%
08:006°
15-24km/h
83%
09:006°
17-26km/h
80%
10:008°
17-28km/h
73%
11:009°
17-28km/h
67%
12:0011°
20-30km/h
60%
13:0012°
20-30km/h
59%
14:0013°
22-31km/h
59%
15:0014°
22-31km/h
58%
16:0014°
20-30km/h
59%
17:0014°
19-28km/h
60%
18:0014°
17-26km/h
61%
19:0013°
17-26km/h
63%
20:0012°
19-28km/h
66%
21:0011°
19-28km/h
68%
22:0011°
0.1mm
19-28km/h
73%
23:0011°
0.1mm
19-28km/h
79%
20 Tue00:0011°
0.1mm
19-28km/h
84%
01:0011°
1.2mm
19-28km/h
88%
02:0011°
1.2mm
19-30km/h
92%
03:0011°
1.2mm
20-30km/h
96%
04:0012°
0.4mm
19-35km/h
95%
05:0012°
0.4mm
24-41km/h
93%
06:0013°
0.5mm
31-46km/h
92%
07:0013°
1.5mm
30-44km/h
91%
08:0012°
1.5mm
28-43km/h
91%
09:0012°
1.6mm
28-41km/h
90%
10:0012°
26-39km/h
91%
11:0011°
26-37km/h
91%
12:0011°
24-35km/h
92%
13:0012°
19-30km/h
89%
14:0012°
13-22km/h
87%
15:0013°
0.4mm
9-17km/h
84%
16:0013°
9-26km/h
87%
17:0014°
19-35km/h
89%
18:0014°
30-44km/h
92%
19:0013°
0.1mm
28-41km/h
89%
20:0012°
0.1mm
26-39km/h
85%
21:0011°
0.1mm
24-35km/h
82%
22:0010°
24-35km/h
78%
23:0010°
24-35km/h
74%
21 Wed00:009°
24-35km/h
70%
01:009°
24-37km/h
69%
02:009°
26-39km/h
67%
03:009°
28-41km/h
66%
04:0010°
30-44km/h
69%
05:0010°
31-46km/h
73%
06:0011°
35-50km/h
76%
07:0011°
0.3mm
35-50km/h
80%
08:0012°
0.3mm
37-52km/h
85%
09:0012°
0.4mm
37-52km/h
89%
10:0011°
0.8mm
24-54km/h
88%
11:0010°
0.8mm
26-54km/h
87%
12:009°
0.8mm
41-56km/h
86%
13:009°
0.2mm
39-54km/h
81%
14:009°
0.2mm
39-54km/h
77%
15:009°
0.2mm
37-52km/h
72%
16:0010°
35-50km/h
67%
17:0010°
35-50km/h
61%
18:0011°
33-48km/h
56%
19:0010°
30-43km/h
57%
20:009°
26-39km/h
57%
21:008°
22-33km/h
58%
22:008°
20-31km/h
62%
23:007°
19-30km/h
66%
22 Thu00:007°
0.2mm
19-28km/h
70%
01:007°
20-30km/h
71%
02:007°
20-30km/h
73%
03:007°
1mm
22-31km/h
74%
04:007°
22-31km/h
75%
05:007°
22-33km/h
75%
06:007°
22-33km/h
76%
07:007°
20-31km/h
76%
08:007°
19-30km/h
77%
09:007°
17-28km/h
77%
10:009°
17-28km/h
75%
11:0010°
17-28km/h
73%
12:0012°
19-28km/h
71%
13:0013°
22-35km/h
71%
14:0015°
28-41km/h
71%
15:0016°
0.3mm
33-48km/h
71%
16:0015°
37-52km/h
74%
17:0015°
0.3mm
41-56km/h
78%
18:0014°
0.3mm
44-59km/h
81%
19:0014°
0.6mm
48-63km/h
82%
20:0014°
0.6mm
50-69km/h
84%
21:0014°
0.6mm
54-72km/h
85%
22:0014°
0.3mm
57-76km/h
87%
23:0015°
0.3mm
59-78km/h
89%
23 Fri00:0015°
0.3mm
63-81km/h
91%
01:0014°
1.9mm
52-72km/h
87%
02:0014°
1.9mm
43-65km/h
84%
03:0013°
2.0mm
35-56km/h
80%
04:0012°
33-54km/h
79%
05:0012°
33-50km/h
78%
06:0011°
33-48km/h
77%
07:0010°
31-46km/h
76%
08:0010°
31-46km/h
74%
09:009°
30-44km/h
73%
10:0010°
31-46km/h
72%
11:0011°
33-48km/h
70%
12:0012°
35-50km/h
69%
13:0012°
39-54km/h
69%
14:0013°
43-57km/h
68%
15:0013°
1.2mm
46-61km/h
68%
16:0013°
46-61km/h
68%
17:0012°
46-63km/h
67%
18:0012°
46-63km/h
67%
19:0011°
1.0mm
43-63km/h
68%
20:0010°
1.0mm
43-61km/h
70%
21:009°
1.1mm
44-61km/h
71%
22:009°
44-61km/h
67%
23:008°
44-63km/h
63%
Hour by Hour
km/h
%
<9km
UV
00:00
11°
26-50km/h
57%
01:00
10°
24-48km/h
61%
02:00
10°
22-48km/h
66%
03:00
10°
24-37km/h
77%
04:00
9°
19-30km/h
81%
05:00
7°
15-22km/h
85%
06:00
6°
9-15km/h
89%
07:00
6°
9-15km/h
89%
08:00
5°
9-15km/h
88%
09:00
5°
9-15km/h
88%
10:00
7°
9-17km/h
82%
UV 1
11:00
8°
11-17km/h
76%
UV 2
12:00
10°
11-19km/h
70%
UV 3
13:00
11°
13-24km/h
62%
UV 4
14:00
13°
17-28km/h
55%
UV 4
15:00
14°
19-33km/h
47%
UV 5
16:00
14°
20-35km/h
49%
UV 4
17:00
14°
22-39km/h
50%
UV 2
18:00
14°
24-41km/h
52%
UV 1
19:00
13°
19-31km/h
57%
UV 1
20:00
Current
12°
15-24km/h
63%
21:00
11°
9-15km/h
68%
22:00
10°
9-15km/h
67%
23:00
10°
9-15km/h
66%

Latest Model Run: 2026-10-17 00:00 UTC

Last updated: Oct 17, 2026, 7:32 PM

Frequently asked questions