S
M
T
W
T
F
S
28
72°
57°
29
73°
57°
30
72°
56°
1
72°
57°
2
72°
56°
3
70°
56°
4
70°
55°
5
69°
54°
6
71°
57°
7
71°
55°
8
70°
57°
9
72°
53°
10
70°
57°
11
70°
56°
12
69°
56°
13
67°
54°
14
67°
55°
15
68°
53°
16
67°
55°
17
67°
53°
18
69°
53°
19
68°
54°
20
67°
53°
21
68°
54°
22
67°
52°
23
70°
52°
24
69°
54°
25
68°
54°
26
69°
56°
27
68°
57°
28
72°
53°
29
69°
58°
30
69°
56°
31
68°
53°
1
68°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Swansea
Swansea's July 2026 forecast shows daily high temperatures ranging from 67° to 73°, with overnight lows between 51° and 58°. The average high for July is 69° with an average low of 55°. 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 Swansea. See also: August | September | October.