S
M
T
W
T
F
S
30
75°
67°
31
77°
66°
1
78°
64°
2
74°
60°
3
73°
61°
4
73°
64°
5
74°
63°
6
74°
65°
7
76°
62°
8
74°
61°
9
74°
59°
10
73°
60°
11
74°
61°
12
75°
63°
13
76°
61°
14
77°
60°
15
75°
66°
16
75°
66°
17
72°
66°
18
72°
65°
19
73°
66°
20
72°
66°
21
73°
65°
22
76°
66°
23
76°
67°
24
77°
66°
25
79°
66°
26
79°
65°
27
78°
63°
28
77°
62°
29
76°
64°
30
76°
65°
1
77°
66°
2
80°
65°
3
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Manhattan Beach
Manhattan Beach's September 2026 forecast shows daily high temperatures ranging from 72° to 80°, with overnight lows between 59° and 67°. The average high for September is 75° with an average low of 64°. 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 Manhattan Beach. See also: October | November | December.
