S
M
T
W
T
F
S
26
106°
78°
27
108°
70°
28
105°
66°
29
107°
61°
30
107°
63°
31
109°
64°
1
107°
73°
2
106°
76°
3
107°
74°
4
106°
74°
5
107°
72°
6
110°
75°
7
112°
75°
8
113°
73°
9
111°
72°
10
110°
73°
11
109°
71°
12
108°
71°
13
106°
72°
14
101°
68°
15
95°
71°
16
98°
71°
17
99°
69°
18
101°
71°
19
100°
71°
20
100°
70°
21
99°
70°
22
101°
69°
23
101°
71°
24
100°
71°
25
101°
70°
26
101°
71°
27
100°
71°
28
100°
70°
29
98°
71°
30
97°
70°
31
96°
70°
1
93°
69°
2
98°
68°
3
97°
68°
4
95°
67°
5
90°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Swansea
Swansea's August 2026 forecast shows daily high temperatures ranging from 90° to 113°, with overnight lows between 67° and 76°. The average high for August is 102° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Swansea. See also: September | October | November.
