S
M
T
W
T
F
S
30
84°
71°
31
79°
67°
1
75°
67°
2
77°
68°
3
77°
70°
4
79°
70°
5
76°
72°
6
81°
71°
7
83°
69°
8
80°
68°
9
77°
67°
10
79°
69°
11
77°
69°
12
79°
67°
13
78°
66°
14
76°
64°
15
80°
68°
16
79°
67°
17
79°
67°
18
77°
63°
19
73°
62°
20
74°
63°
21
77°
64°
22
78°
65°
23
77°
65°
24
74°
62°
25
71°
59°
26
70°
59°
27
69°
58°
28
70°
59°
29
73°
60°
30
73°
62°
1
72°
60°
2
74°
62°
3
78°
65°
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 69° to 83°, with overnight lows between 58° and 72°. The average high for September is 76° with an average low of 65°. 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.
