S
M
T
W
T
F
S
30
91°
68°
31
90°
68°
1
90°
65°
2
85°
65°
3
86°
68°
4
88°
67°
5
87°
67°
6
88°
68°
7
89°
67°
8
88°
66°
9
89°
66°
10
83°
67°
11
88°
66°
12
87°
63°
13
82°
64°
14
81°
65°
15
82°
65°
16
84°
64°
17
83°
61°
18
83°
59°
19
81°
60°
20
81°
63°
21
80°
58°
22
80°
58°
23
83°
59°
24
84°
61°
25
83°
63°
26
84°
61°
27
83°
59°
28
78°
60°
29
81°
56°
30
82°
58°
1
81°
55°
2
Hist. Avg.
79°
56°
3
Hist. Avg.
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Acapulco
Acapulco's September 2026 forecast shows daily high temperatures ranging from 78° to 91°, with overnight lows between 55° and 68°. The average high for September is 84° with an average low of 63°. 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 Acapulco. See also: October | November | December.
