S
M
T
W
T
F
S
26
83°
62°
27
83°
62°
28
82°
61°
29
82°
60°
30
79°
59°
31
75°
56°
1
74°
53°
2
74°
53°
3
75°
55°
4
74°
57°
5
74°
56°
6
75°
59°
7
74°
59°
8
75°
58°
9
75°
58°
10
78°
53°
11
75°
52°
12
79°
57°
13
76°
58°
14
82°
59°
15
83°
58°
16
78°
58°
17
78°
57°
18
82°
59°
19
80°
54°
20
78°
50°
21
74°
50°
22
74°
49°
23
75°
49°
24
75°
52°
25
79°
53°
26
80°
53°
27
81°
50°
28
78°
50°
29
77°
52°
30
77°
54°
31
81°
55°
1
80°
47°
2
77°
46°
3
71°
49°
4
73°
51°
5
75°
55°
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 46° and 62°. The average high for August is 77° with an average low of 55°. 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.