S
M
T
W
T
F
S
30
83°
70°
31
80°
68°
1
80°
68°
2
80°
67°
3
78°
68°
4
72°
67°
5
72°
68°
6
75°
68°
7
74°
69°
8
72°
68°
9
74°
67°
10
73°
68°
11
73°
65°
12
77°
69°
13
76°
69°
14
77°
69°
15
77°
69°
16
76°
68°
17
76°
68°
18
73°
64°
19
70°
63°
20
71°
63°
21
72°
65°
22
74°
66°
23
74°
65°
24
71°
63°
25
67°
60°
26
67°
60°
27
66°
59°
28
67°
60°
29
68°
61°
30
68°
62°
1
69°
61°
2
70°
66°
3
74°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pacific Beach
Pacific Beach's September 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 59° and 70°. The average high for September is 73° with an average low of 66°. 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 Pacific Beach. See also: October | November | December.