S
M
T
W
T
F
S
26
73°
62°
27
70°
56°
28
76°
64°
29
76°
59°
30
73°
57°
31
71°
51°
1
71°
54°
2
80°
54°
3
82°
58°
4
72°
55°
5
68°
47°
6
66°
47°
7
68°
51°
8
69°
57°
9
70°
55°
10
72°
58°
11
74°
60°
12
74°
59°
13
69°
56°
14
69°
57°
15
67°
55°
16
66°
56°
17
65°
56°
18
64°
54°
19
63°
52°
20
63°
51°
21
64°
50°
22
63°
50°
23
63°
51°
24
65°
55°
25
67°
55°
26
65°
53°
27
66°
51°
28
67°
55°
29
67°
54°
30
68°
55°
31
67°
55°
1
64°
53°
2
63°
51°
3
63°
50°
4
62°
50°
5
63°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Merthyr Tydfil/merthyr Tudful
Merthyr Tydfil/merthyr Tudful's August 2026 forecast shows daily high temperatures ranging from 62° to 82°, with overnight lows between 47° and 60°. The average high for August is 67° with an average low of 54°. 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 Merthyr Tydfil/merthyr Tudful. See also: September | October | November.
