Current conditions in Portsmouth: 30°C, with a high of 30°C and a low of 27°C today.

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Portsmouth Weather

7-day weather forecast

Current Weather

Portsmouth

50.80°N, -1.09°E

Last updated

Aug 12, 2026, 9:04 PM

30°
30°

Clear sky

High: 30°Low: 27°
07:4622:32
Wind6-11km/h
Humidity26%
Visibility10,000 m
UV Index2
Daily Forecast

Today

Aug 12

27°/30°
6-13km/h

Thu

Aug 13

19°/35°
11-19km/h

Fri

Aug 14

19°/32°
28-41km/h

Sat

Aug 15

16°/27°
26-39km/h

Sun

Aug 16

12°/25°
31-48km/h

Mon

Aug 17

13°/23°
19-28km/h

Tue

Aug 18

15°/24°
43-57km/h
Hourly Forecast
12 Wed00:0021°
13-20km/h
48%
01:0020°
11-19km/h
57%
02:0018°
11-19km/h
66%
03:0019°
13-20km/h
70%
04:0018°
11-19km/h
72%
05:0018°
9-15km/h
73%
06:0017°
7-13km/h
75%
07:0018°
7-13km/h
75%
08:0019°
9-15km/h
75%
UV 1
09:0020°
9-15km/h
75%
UV 1
10:0022°
9-15km/h
66%
UV 3
11:0024°
7-13km/h
57%
UV 4
12:0026°
7-13km/h
48%
UV 6
13:0028°
7-13km/h
42%
UV 7
14:0029°
9-15km/h
35%
UV 7
15:0031°
9-15km/h
29%
UV 8
16:0031°
9-15km/h
27%
UV 8
17:0032°
9-15km/h
26%
UV 7
18:0032°
9-15km/h
24%
UV 7
19:0031°
7-13km/h
25%
UV 5
20:0031°
7-13km/h
25%
UV 4
● 21:0030°
6-11km/h
26%
UV 2
22:0028°
6-11km/h
34%
UV 1
23:0027°
6-13km/h
41%
UV 1
13 Thu00:0025°
7-13km/h
49%
01:0024°
7-13km/h
47%
02:0023°
9-15km/h
45%
03:0022°
9-15km/h
43%
04:0021°
9-15km/h
50%
05:0020°
7-13km/h
56%
06:0019°
7-13km/h
63%
07:0019°
6-11km/h
65%
08:0020°
6-11km/h
68%
UV 1
09:0020°
4-9km/h
70%
UV 1
10:0024°
4-11km/h
62%
UV 3
11:0028°
6-11km/h
54%
UV 4
12:0032°
7-13km/h
46%
UV 6
13:0033°
9-15km/h
39%
UV 7
14:0034°
9-17km/h
33%
UV 7
15:0035°
11-19km/h
26%
UV 8
16:0035°
11-19km/h
28%
UV 8
17:0034°
9-17km/h
29%
UV 7
18:0034°
9-17km/h
31%
UV 7
19:0032°
7-15km/h
34%
UV 5
20:0031°
7-15km/h
38%
UV 4
21:0029°
7-13km/h
41%
UV 2
22:0027°
6-11km/h
48%
UV 1
23:0026°
6-11km/h
55%
UV 1
14 Fri00:0024°
4-9km/h
62%
01:0023°
6-13km/h
63%
02:0023°
7-15km/h
64%
03:0022°
11-19km/h
65%
04:0021°
11-19km/h
71%
05:0020°
9-17km/h
78%
06:0019°
9-17km/h
84%
07:0019°
19-30km/h
82%
08:0020°
17-28km/h
83%
09:0020°
17-26km/h
85%
10:0023°
17-26km/h
71%
11:0025°
17-26km/h
58%
12:0028°
17-26km/h
44%
13:0029°
15-26km/h
40%
14:0031°
17-28km/h
37%
15:0032°
19-28km/h
33%
16:0032°
22-31km/h
35%
17:0032°
24-35km/h
37%
18:0032°
28-39km/h
39%
19:0031°
28-39km/h
38%
20:0030°
28-41km/h
37%
21:0029°
28-41km/h
36%
22:0026°
22-37km/h
45%
23:0024°
19-35km/h
54%
15 Sat00:0021°
19-31km/h
63%
01:0020°
19-33km/h
64%
02:0020°
20-35km/h
65%
03:0019°
24-37km/h
66%
04:0018°
26-37km/h
69%
05:0017°
26-39km/h
72%
06:0016°
28-39km/h
75%
07:0016°
26-37km/h
74%
08:0016°
26-37km/h
73%
09:0016°
24-35km/h
72%
10:0018°
22-33km/h
65%
11:0019°
22-31km/h
58%
12:0021°
20-30km/h
51%
13:0022°
20-30km/h
46%
14:0024°
19-28km/h
40%
15:0025°
19-28km/h
35%
16:0026°
17-24km/h
33%
17:0026°
13-22km/h
30%
18:0027°
11-19km/h
28%
19:0027°
13-20km/h
28%
20:0026°
13-20km/h
28%
21:0026°
15-22km/h
28%
22:0024°
20-31km/h
33%
23:0021°
26-39km/h
37%
16 Sun00:0019°
31-48km/h
42%
01:0018°
30-46km/h
50%
02:0016°
30-44km/h
57%
03:0015°
28-43km/h
65%
04:0014°
26-39km/h
71%
05:0013°
24-35km/h
76%
06:0012°
22-31km/h
82%
07:0012°
22-31km/h
80%
08:0013°
20-30km/h
79%
09:0013°
20-30km/h
77%
10:0015°
17-26km/h
69%
11:0018°
15-22km/h
60%
12:0020°
11-19km/h
52%
13:0021°
9-15km/h
48%
14:0022°
6-13km/h
45%
15:0023°
4-9km/h
41%
16:0024°
4-13km/h
38%
17:0024°
7-15km/h
36%
18:0025°
11-19km/h
33%
19:0025°
9-17km/h
33%
20:0024°
9-15km/h
33%
21:0024°
7-13km/h
33%
22:0022°
7-13km/h
40%
23:0019°
7-15km/h
46%
17 Mon00:0017°
9-15km/h
53%
01:0016°
4-17km/h
61%
02:0016°
7-20km/h
70%
03:0015°
15-22km/h
78%
04:0014°
15-24km/h
82%
05:0014°
17-26km/h
85%
06:0013°
19-28km/h
89%
07:0013°
17-26km/h
87%
08:0014°
15-22km/h
85%
09:0014°
13-20km/h
83%
10:0016°
11-19km/h
72%
11:0018°
9-17km/h
60%
12:0020°
9-15km/h
49%
13:0021°
7-15km/h
47%
14:0022°
7-17km/h
44%
15:0023°
9-17km/h
42%
16:0023°
11-20km/h
45%
17:0022°
15-24km/h
48%
18:0022°
19-28km/h
51%
19:0022°
15-26km/h
53%
20:0021°
13-22km/h
54%
21:0021°
13-20km/h
56%
22:0020°
13-22km/h
61%
23:0019°
15-22km/h
67%
18 Tue00:0018°
15-24km/h
72%
01:0017°
13-22km/h
70%
02:0016°
13-20km/h
69%
03:0015°
11-19km/h
67%
04:0016°
15-22km/h
68%
05:0016°
17-26km/h
69%
06:0017°
20-30km/h
70%
07:0017°
0.1mm
24-35km/h
77%
08:0017°
0.1mm
28-41km/h
83%
09:0017°
0.1mm
31-46km/h
90%
10:0018°
33-48km/h
88%
11:0019°
33-48km/h
86%
12:0020°
35-50km/h
84%
13:0021°
37-52km/h
80%
14:0023°
39-54km/h
77%
15:0024°
41-56km/h
73%
16:0024°
41-56km/h
70%
17:0024°
43-57km/h
67%
18:0024°
43-57km/h
64%
19:0023°
35-54km/h
64%
20:0023°
31-48km/h
65%
21:0022°
30-44km/h
65%
22:0021°
28-43km/h
71%
23:0019°
28-39km/h
77%
Hour by Hour
km/h
%
<9km
UV
00:00
21°
13-20km/h
48%
01:00
20°
11-19km/h
57%
02:00
18°
11-19km/h
66%
03:00
19°
13-20km/h
70%
04:00
18°
11-19km/h
72%
05:00
18°
9-15km/h
73%
06:00
17°
7-13km/h
75%
07:00
18°
7-13km/h
75%
08:00
19°
9-15km/h
75%
UV 1
09:00
20°
9-15km/h
75%
UV 1
10:00
22°
9-15km/h
66%
UV 3
11:00
24°
7-13km/h
57%
UV 4
12:00
26°
7-13km/h
48%
UV 6
13:00
28°
7-13km/h
42%
UV 7
14:00
29°
9-15km/h
35%
UV 7
15:00
31°
9-15km/h
29%
UV 8
16:00
31°
9-15km/h
27%
UV 8
17:00
32°
9-15km/h
26%
UV 7
18:00
32°
9-15km/h
24%
UV 7
19:00
31°
7-13km/h
25%
UV 5
20:00
31°
7-13km/h
25%
UV 4
21:00
Current
30°
6-11km/h
26%
UV 2
22:00
28°
6-11km/h
34%
UV 1
23:00
27°
6-13km/h
41%
UV 1

Latest Model Run: 2026-08-12 00:00 UTC

Last updated: Aug 12, 2026, 9:04 PM

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