S
M
T
W
T
F
S
26
65°
45°
27
65°
46°
28
56°
48°
29
67°
45°
30
73°
49°
1
60°
49°
2
62°
46°
3
62°
50°
4
63°
52°
5
58°
51°
6
58°
47°
7
60°
48°
8
65°
50°
9
67°
50°
10
56°
45°
11
58°
37°
12
58°
38°
13
56°
47°
14
55°
44°
15
59°
40°
16
55°
43°
17
58°
45°
18
52°
50°
19
58°
50°
20
58°
52°
21
67°
53°
22
71°
56°
23
68°
56°
24
71°
58°
25
75°
56°
26
74°
57°
27
73°
56°
28
70°
54°
29
69°
53°
30
67°
52°
31
62°
48°
1
61°
46°
2
61°
47°
3
63°
52°
4
62°
53°
5
65°
53°
6
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hirwaun
Hirwaun's May 2026 forecast shows daily high temperatures ranging from 52° to 75°, with overnight lows between 46° and 58°. The average high for May is 66° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Hirwaun. See also: June | July | August.
