S
M
T
W
T
F
S
30
86°
70°
31
83°
70°
1
91°
74°
2
92°
73°
3
90°
72°
4
88°
71°
5
89°
73°
6
85°
73°
7
84°
73°
8
85°
71°
9
86°
72°
10
84°
71°
11
85°
72°
12
84°
72°
13
85°
73°
14
84°
72°
15
81°
72°
16
82°
71°
17
81°
72°
18
81°
73°
19
82°
73°
20
82°
72°
21
81°
73°
22
81°
73°
23
82°
72°
24
81°
73°
25
82°
73°
26
83°
72°
27
82°
73°
28
82°
73°
29
83°
72°
30
82°
73°
1
82°
73°
2
83°
72°
3
82°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wai‘anae
Wai‘anae's September 2026 forecast shows daily high temperatures ranging from 81° to 92°, with overnight lows between 71° and 74°. The average high for September is 84° with an average low of 72°. 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 Wai‘anae. See also: October | November | December.