S
M
T
W
T
F
S
30
87°
76°
31
89°
77°
1
88°
76°
2
89°
75°
3
88°
75°
4
87°
74°
5
88°
75°
6
88°
75°
7
87°
76°
8
88°
77°
9
89°
72°
10
89°
76°
11
88°
76°
12
89°
75°
13
88°
74°
14
87°
74°
15
87°
74°
16
89°
73°
17
88°
74°
18
87°
75°
19
88°
74°
20
89°
74°
21
88°
73°
22
87°
73°
23
88°
75°
24
87°
74°
25
Hist. Avg.
88°
75°
26
Hist. Avg.
88°
75°
27
Hist. Avg.
88°
75°
28
Hist. Avg.
88°
75°
29
Hist. Avg.
88°
75°
30
Hist. Avg.
88°
75°
1
Hist. Avg.
88°
75°
2
Hist. Avg.
88°
75°
3
Hist. Avg.
88°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in 'Aiea
'Aiea's September 2026 forecast shows daily high temperatures ranging from 87° to 89°, with overnight lows between 72° 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.
