S
M
T
W
T
F
S
30
88°
50°
31
76°
47°
1
72°
50°
2
79°
44°
3
80°
47°
4
79°
55°
5
82°
56°
6
70°
54°
7
67°
58°
8
73°
64°
9
86°
70°
10
83°
66°
11
76°
51°
12
76°
52°
13
72°
51°
14
75°
52°
15
74°
51°
16
74°
51°
17
76°
52°
18
74°
52°
19
72°
48°
20
75°
52°
21
68°
51°
22
68°
50°
23
70°
51°
24
73°
51°
25
72°
50°
26
70°
52°
27
73°
51°
28
74°
52°
29
74°
52°
30
75°
51°
1
75°
52°
2
74°
51°
3
75°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Big Sur
Big Sur's September 2026 forecast shows daily high temperatures ranging from 67° to 86°, with overnight lows between 48° and 70°. The average high for September is 74° with an average low of 53°. 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 Big Sur. See also: October | November | December.
