S
M
T
W
T
F
S
30
86°
70°
31
87°
69°
1
86°
70°
2
86°
70°
3
87°
71°
4
88°
71°
5
88°
70°
6
87°
70°
7
86°
69°
8
87°
70°
9
88°
69°
10
87°
70°
11
88°
69°
12
88°
71°
13
87°
70°
14
88°
70°
15
88°
71°
16
87°
71°
17
88°
70°
18
88°
70°
19
87°
67°
20
87°
71°
21
88°
71°
22
88°
70°
23
87°
70°
24
88°
69°
25
87°
71°
26
88°
71°
27
87°
70°
28
88°
71°
29
87°
70°
30
88°
71°
1
87°
69°
2
88°
70°
3
Hist. Avg.
87°
69°
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 86° to 88°, with overnight lows between 67° and 71°. The average high for September is 87° with an average low of 70°. 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.