S
M
T
W
T
F
S
28
94°
73°
29
95°
74°
30
96°
74°
1
95°
73°
2
96°
73°
3
94°
76°
4
93°
71°
5
89°
70°
6
86°
71°
7
88°
73°
8
88°
72°
9
87°
73°
10
89°
72°
11
84°
68°
12
89°
67°
13
90°
67°
14
91°
68°
15
91°
70°
16
93°
72°
17
94°
71°
18
99°
70°
19
91°
72°
20
96°
70°
21
94°
69°
22
90°
68°
23
88°
68°
24
93°
73°
25
94°
72°
26
94°
73°
27
93°
72°
28
93°
72°
29
91°
71°
30
89°
70°
31
87°
70°
1
85°
68°
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 84° to 99°, with overnight lows between 67° and 73°. The average high for July is 91° with an average low of 70°. 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.