Current conditions in Portsmouth: 19°C, with a high of 19°C and a low of 16°C today.

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Portsmouth Weather

7-day weather forecast

Current Weather

Portsmouth

50.80°N, -1.09°E

Last updated

Sep 15, 2026, 8:34 PM

19°
18°

Few clouds

High: 19°Low: 16°
08:3921:20
Wind22-39km/h
Humidity49%
Visibility10,000 m
UV Index0
Daily Forecast

Today

Sep 15

16°/19°
22-39km/h

Wed

Sep 16

11°/19°
22-37km/h

Thu

Sep 17

12°/20°
39-54km/h

Fri

Sep 18

10°/19°
35-50km/h

Sat

Sep 19

15°/19°
33-48km/h

Sun

Sep 20

13°/23°
19-31km/h

Mon

Sep 21

12°/25°
9-17km/h
Hourly Forecast
15 Tue00:0018°
17-31km/h
93%
01:0018°
13-24km/h
95%
02:0017°
9-19km/h
96%
03:0018°
15-22km/h
97%
04:0018°
13-24km/h
98%
7,000 m
05:0017°
11-24km/h
99%
4,000 m
06:0017°
9-26km/h
100%
07:0017°
11-28km/h
100%
4,000 m
08:0016°
13-28km/h
100%
4,000 m
09:0016°
15-30km/h
100%
10:0017°
15-28km/h
93%
11:0018°
15-26km/h
87%
UV 1
12:0019°
15-24km/h
80%
UV 1
13:0020°
15-24km/h
72%
UV 2
14:0021°
15-26km/h
64%
UV 2
15:0022°
0.1-0.7mm
15-26km/h
56%
UV 3
16:0022°
17-30km/h
50%
UV 4
17:0022°
20-33km/h
45%
UV 4
18:0022°
22-37km/h
39%
UV 5
19:0021°
22-37km/h
42%
UV 3
20:0020°
22-39km/h
46%
UV 2
● 21:0019°
22-39km/h
49%
22:0018°
22-39km/h
56%
23:0016°
22-37km/h
63%
16 Wed00:0015°
22-37km/h
70%
01:0014°
20-35km/h
75%
02:0013°
19-35km/h
79%
03:0012°
17-33km/h
84%
04:0012°
15-31km/h
82%
05:0013°
15-31km/h
80%
06:0013°
13-30km/h
78%
07:0012°
13-30km/h
81%
08:0012°
11-28km/h
85%
09:0011°
11-28km/h
88%
10:0012°
11-26km/h
82%
UV 1
11:0014°
11-22km/h
76%
UV 3
12:0015°
11-20km/h
70%
UV 4
13:0016°
13-22km/h
64%
UV 4
14:0017°
13-22km/h
57%
UV 4
15:0018°
15-24km/h
51%
UV 4
16:0018°
15-24km/h
50%
UV 3
17:0019°
15-26km/h
49%
UV 3
18:0019°
15-26km/h
48%
UV 2
19:0019°
15-26km/h
49%
UV 1
20:0018°
13-26km/h
51%
UV 1
21:0018°
13-26km/h
52%
22:0017°
15-30km/h
58%
23:0015°
19-33km/h
63%
17 Thu00:0014°
20-37km/h
69%
01:0014°
19-35km/h
71%
02:0013°
19-35km/h
74%
03:0013°
19-33km/h
76%
04:0012°
22-31km/h
71%
05:0013°
24-35km/h
73%
06:0013°
30-44km/h
78%
07:0013°
0.1mm
31-46km/h
77%
08:0014°
0.1mm
33-48km/h
77%
09:0014°
0.1mm
35-50km/h
76%
10:0014°
0.4mm
37-52km/h
80%
11:0015°
0.4mm
37-52km/h
84%
12:0015°
0.5mm
39-54km/h
88%
13:0017°
0.7mm
37-52km/h
80%
14:0018°
0.7mm
33-48km/h
73%
15:0020°
0.7mm
31-46km/h
65%
16:0020°
31-46km/h
60%
17:0020°
30-44km/h
56%
18:0020°
30-44km/h
51%
19:0018°
30-46km/h
54%
20:0017°
30-46km/h
58%
21:0015°
33-48km/h
61%
22:0014°
30-44km/h
65%
23:0012°
26-39km/h
68%
18 Fri00:0011°
24-35km/h
72%
01:0012°
24-35km/h
73%
02:0012°
26-37km/h
73%
03:0013°
26-37km/h
74%
04:0012°
24-35km/h
76%
05:0011°
24-35km/h
78%
06:0010°
22-33km/h
80%
07:0010°
20-31km/h
81%
08:0010°
19-28km/h
81%
09:0010°
17-26km/h
82%
10:0012°
17-26km/h
77%
11:0013°
17-26km/h
71%
12:0015°
17-26km/h
66%
13:0016°
19-28km/h
63%
14:0018°
19-28km/h
60%
15:0019°
20-30km/h
57%
16:0019°
22-33km/h
61%
17:0018°
26-35km/h
66%
18:0018°
28-39km/h
70%
19:0017°
30-43km/h
70%
20:0017°
33-46km/h
71%
21:0016°
35-50km/h
71%
22:0016°
0.2mm
33-48km/h
76%
23:0015°
0.2mm
31-46km/h
80%
19 Sat00:0015°
0.2mm
30-44km/h
85%
01:0016°
0.2mm
30-44km/h
87%
02:0016°
0.2mm
30-46km/h
88%
03:0017°
0.2mm
31-46km/h
90%
04:0017°
31-46km/h
90%
05:0017°
31-46km/h
89%
06:0017°
31-46km/h
89%
07:0017°
30-44km/h
88%
08:0016°
30-41km/h
88%
09:0016°
28-39km/h
87%
10:0017°
28-41km/h
85%
11:0017°
30-43km/h
84%
12:0018°
30-44km/h
82%
13:0018°
31-46km/h
83%
14:0019°
31-46km/h
83%
15:0019°
33-48km/h
84%
16:0019°
33-48km/h
86%
17:0018°
31-46km/h
87%
18:0018°
0.1mm
31-46km/h
89%
19:0018°
30-44km/h
89%
20:0018°
30-43km/h
90%
21:0018°
0.1mm
28-41km/h
90%
22:0018°
24-37km/h
87%
23:0017°
22-35km/h
84%
20 Sun00:0017°
19-31km/h
81%
01:0016°
19-31km/h
83%
02:0015°
20-30km/h
84%
03:0014°
20-30km/h
86%
04:0014°
19-28km/h
86%
05:0013°
19-28km/h
87%
06:0013°
17-26km/h
87%
07:0013°
15-24km/h
88%
08:0013°
13-20km/h
88%
09:0013°
11-19km/h
89%
10:0015°
9-17km/h
83%
11:0016°
9-15km/h
78%
12:0018°
7-13km/h
72%
13:0019°
7-13km/h
65%
14:0020°
7-13km/h
59%
15:0021°
7-13km/h
52%
16:0022°
9-17km/h
54%
17:0022°
13-20km/h
56%
18:0023°
15-24km/h
58%
19:0021°
15-22km/h
62%
20:0020°
13-22km/h
66%
21:0018°
13-20km/h
70%
22:0017°
11-19km/h
68%
23:0016°
9-17km/h
65%
21 Mon00:0015°
9-15km/h
63%
01:0015°
9-15km/h
65%
02:0014°
9-15km/h
68%
03:0014°
9-15km/h
70%
04:0014°
9-15km/h
70%
05:0013°
9-15km/h
69%
06:0013°
9-15km/h
69%
07:0013°
9-15km/h
68%
08:0012°
7-13km/h
68%
09:0012°
7-13km/h
67%
10:0014°
7-13km/h
63%
11:0017°
6-11km/h
58%
12:0019°
6-11km/h
54%
13:0020°
4-9km/h
52%
14:0022°
2-9km/h
50%
15:0023°
2-7km/h
48%
16:0024°
4-9km/h
51%
17:0024°
7-13km/h
55%
18:0025°
9-15km/h
58%
19:0023°
9-15km/h
63%
20:0021°
9-17km/h
69%
21:0019°
9-17km/h
74%
22:0018°
7-15km/h
76%
23:0018°
6-13km/h
78%
Hour by Hour
km/h
%
<9km
UV
00:00
18°
17-31km/h
93%
01:00
18°
13-24km/h
95%
02:00
17°
9-19km/h
96%
03:00
18°
15-22km/h
97%
04:00
18°
13-24km/h
98%
7,000 m
05:00
17°
11-24km/h
99%
4,000 m
06:00
17°
9-26km/h
100%
07:00
17°
11-28km/h
100%
4,000 m
08:00
16°
13-28km/h
100%
4,000 m
09:00
16°
15-30km/h
100%
10:00
17°
15-28km/h
93%
11:00
18°
15-26km/h
87%
UV 1
12:00
19°
15-24km/h
80%
UV 1
13:00
20°
15-24km/h
72%
UV 2
14:00
21°
15-26km/h
64%
UV 2
15:00
22°
0.1-0.7mm
15-26km/h
56%
UV 3
16:00
22°
17-30km/h
50%
UV 4
17:00
22°
20-33km/h
45%
UV 4
18:00
22°
22-37km/h
39%
UV 5
19:00
21°
22-37km/h
42%
UV 3
20:00
20°
22-39km/h
46%
UV 2
21:00
Current
19°
22-39km/h
49%
22:00
18°
22-39km/h
56%
23:00
16°
22-37km/h
63%

Latest Model Run: 2026-09-15 00:00 UTC

Last updated: Sep 15, 2026, 8:34 PM

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