S
M
T
W
T
F
S
30
87°
74°
31
87°
75°
1
87°
75°
2
89°
76°
3
90°
75°
4
89°
76°
5
89°
75°
6
87°
71°
7
87°
72°
8
86°
73°
9
88°
72°
10
87°
71°
11
88°
72°
12
87°
72°
13
86°
71°
14
87°
69°
15
83°
72°
16
84°
70°
17
83°
72°
18
83°
72°
19
84°
71°
20
83°
72°
21
83°
72°
22
84°
70°
23
83°
72°
24
83°
72°
25
84°
71°
26
85°
71°
27
84°
72°
28
84°
72°
29
83°
71°
30
84°
72°
1
84°
72°
2
85°
71°
3
84°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wailea
Wailea's September 2026 forecast shows daily high temperatures ranging from 83° to 90°, with overnight lows between 69° and 76°. The average high for September is 85° 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 Wailea. See also: October | November | December.