S
M
T
W
T
F
S
26
56°
39°
27
57°
42°
28
55°
38°
29
53°
41°
30
53°
40°
1
54°
40°
2
53°
41°
3
53°
39°
4
54°
38°
5
53°
38°
6
53°
39°
7
54°
41°
8
55°
46°
9
59°
45°
10
56°
44°
11
56°
45°
12
57°
43°
13
56°
40°
14
59°
43°
15
62°
47°
16
63°
47°
17
63°
48°
18
62°
48°
19
64°
47°
20
60°
48°
21
61°
47°
22
63°
48°
23
63°
47°
24
61°
46°
25
63°
45°
26
64°
47°
27
67°
47°
28
64°
43°
29
62°
49°
30
66°
43°
31
62°
49°
1
65°
46°
2
67°
44°
3
61°
46°
4
61°
45°
5
62°
44°
6
62°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Brynmawr
Brynmawr's May 2026 forecast shows daily high temperatures ranging from 53° to 67°, with overnight lows between 38° and 49°. The average high for May is 59° with an average low of 44°. 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 Brynmawr. See also: June | July | August.