S
M
T
W
T
F
S
28
64°
59°
29
64°
57°
30
64°
59°
1
64°
59°
2
63°
57°
3
64°
57°
4
66°
59°
5
64°
59°
6
63°
57°
7
66°
57°
8
68°
57°
9
70°
60°
10
76°
61°
11
75°
64°
12
79°
63°
13
77°
62°
14
75°
64°
15
75°
63°
16
75°
60°
17
72°
57°
18
69°
57°
19
68°
56°
20
67°
55°
21
68°
56°
22
63°
58°
23
64°
59°
24
64°
59°
25
65°
58°
26
65°
59°
27
66°
59°
28
64°
58°
29
64°
58°
30
66°
59°
31
68°
59°
1
66°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Holyhead
Holyhead's July 2026 forecast shows daily high temperatures ranging from 63° to 79°, with overnight lows between 55° and 64°. The average high for July is 69° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Holyhead. See also: August | September | October.