S
M
T
W
T
F
S
26
79°
61°
27
81°
62°
28
82°
63°
29
81°
63°
30
82°
64°
31
83°
64°
1
82°
63°
2
81°
61°
3
77°
57°
4
76°
58°
5
76°
61°
6
77°
61°
7
79°
62°
8
81°
62°
9
82°
61°
10
82°
62°
11
81°
62°
12
82°
61°
13
82°
63°
14
82°
60°
15
82°
62°
16
81°
62°
17
77°
61°
18
82°
62°
19
81°
61°
20
80°
56°
21
82°
53°
22
76°
54°
23
75°
54°
24
76°
56°
25
75°
53°
26
77°
56°
27
75°
53°
28
76°
52°
29
74°
52°
30
74°
51°
31
75°
50°
1
73°
50°
2
73°
52°
3
74°
53°
4
71°
53°
5
74°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Wales
Wales's August 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 50° and 64°. The average high for August is 78° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Wales. See also: September | October | November.