S
M
T
W
T
F
S
30
89°
75°
31
85°
75°
1
86°
75°
2
89°
73°
3
87°
74°
4
87°
72°
5
87°
74°
6
87°
73°
7
90°
73°
8
90°
74°
9
89°
73°
10
90°
72°
11
88°
72°
12
88°
72°
13
89°
74°
14
90°
73°
15
89°
71°
16
85°
72°
17
86°
73°
18
86°
73°
19
85°
72°
20
86°
74°
21
86°
73°
22
87°
73°
23
86°
72°
24
86°
73°
25
87°
73°
26
86°
72°
27
86°
73°
28
87°
73°
29
86°
72°
30
86°
72°
1
85°
73°
2
86°
73°
3
85°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Waihe'e-Waiehu
Waihe'e-Waiehu's September 2026 forecast shows daily high temperatures ranging from 85° to 90°, with overnight lows between 71° and 74°. The average high for September is 87° with an average low of 73°. 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 Waihe'e-Waiehu. See also: October | November | December.
