S
M
T
W
T
F
S
30
87°
76°
31
88°
76°
1
89°
77°
2
89°
76°
3
88°
78°
4
88°
75°
5
89°
76°
6
87°
76°
7
88°
78°
8
87°
78°
9
89°
74°
10
89°
79°
11
89°
77°
12
89°
73°
13
90°
70°
14
88°
72°
15
89°
76°
16
90°
77°
17
89°
76°
18
88°
75°
19
89°
76°
20
90°
75°
21
89°
76°
22
88°
74°
23
89°
75°
24
88°
75°
25
89°
74°
26
88°
75°
27
86°
76°
28
85°
76°
29
86°
77°
30
84°
76°
1
85°
77°
2
85°
77°
3
86°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in 'Aiea
'Aiea's September 2026 forecast shows daily high temperatures ranging from 84° to 90°, with overnight lows between 70° and 77°. The average high for September is 88° with an average low of 75°. 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 'Aiea. See also: October | November | December.
