S
M
T
W
T
F
S
30
84°
64°
31
84°
64°
1
83°
63°
2
84°
63°
3
82°
62°
4
81°
64°
5
80°
63°
6
81°
62°
7
83°
63°
8
84°
64°
9
84°
64°
10
83°
63°
11
84°
64°
12
84°
63°
13
83°
63°
14
77°
62°
15
79°
59°
16
81°
61°
17
84°
62°
18
85°
60°
19
83°
59°
20
83°
58°
21
84°
59°
22
81°
57°
23
80°
58°
24
83°
61°
25
83°
62°
26
84°
63°
27
84°
63°
28
86°
62°
29
84°
59°
30
83°
55°
1
81°
57°
2
75°
55°
3
74°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Coast
South Coast's September 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 52° and 64°. The average high for September is 82° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in South Coast. See also: October | November | December.
