S
M
T
W
T
F
S
26
70°
63°
27
68°
59°
28
70°
64°
29
70°
63°
30
72°
52°
31
70°
43°
1
N/A
2
75°
63°
3
74°
64°
4
71°
62°
5
69°
57°
6
68°
57°
7
70°
58°
8
70°
60°
9
69°
62°
10
71°
61°
11
72°
63°
12
69°
62°
13
70°
61°
14
73°
58°
15
70°
58°
16
68°
57°
17
67°
57°
18
66°
55°
19
65°
53°
20
65°
52°
21
66°
51°
22
65°
52°
23
65°
54°
24
68°
57°
25
69°
57°
26
67°
55°
27
66°
52°
28
69°
56°
29
69°
55°
30
70°
56°
31
69°
56°
1
65°
54°
2
64°
53°
3
64°
52°
4
65°
53°
5
65°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Swansea
Swansea's August 2026 forecast shows daily high temperatures ranging from 64° to 75°, with overnight lows between 50° and 64°. The average high for August is 68° with an average low of 57°. 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.
