S
M
T
W
T
F
S
28
66°
59°
29
66°
57°
30
68°
57°
1
68°
57°
2
72°
54°
3
72°
52°
4
68°
59°
5
68°
59°
6
75°
59°
7
70°
59°
8
82°
59°
9
81°
59°
10
91°
63°
11
88°
68°
12
86°
63°
13
77°
59°
14
81°
59°
15
N/A
16
85°
63°
17
84°
62°
18
81°
60°
19
80°
61°
20
79°
59°
21
79°
62°
22
79°
61°
23
80°
60°
24
78°
58°
25
79°
60°
26
77°
57°
27
74°
58°
28
69°
53°
29
74°
57°
30
73°
56°
31
72°
57°
1
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Penarth
Penarth's July 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 53° and 63°. The average high for July is 77° 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 Penarth. See also: August | September | October.
