S
M
T
W
T
F
S
26
70°
48°
27
64°
44°
28
60°
40°
29
61°
45°
30
69°
49°
1
65°
46°
2
62°
42°
3
62°
43°
4
63°
44°
5
67°
50°
6
71°
52°
7
72°
48°
8
67°
50°
9
64°
52°
10
68°
52°
11
73°
54°
12
75°
55°
13
74°
56°
14
74°
55°
15
69°
46°
16
69°
47°
17
70°
48°
18
69°
50°
19
73°
47°
20
68°
50°
21
70°
54°
22
74°
55°
23
75°
57°
24
76°
51°
25
75°
50°
26
70°
51°
27
73°
51°
28
72°
52°
29
75°
53°
30
76°
51°
31
74°
51°
1
73°
59°
2
76°
58°
3
79°
55°
4
77°
56°
5
80°
60°
6
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gwynedd
Gwynedd's May 2026 forecast shows daily high temperatures ranging from 60° to 82°, with overnight lows between 40° and 62°. The average high for May is 71° with an average low of 51°. 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 Gwynedd. See also: June | July | August.
