S
M
T
W
T
F
S
30
87°
70°
31
88°
69°
1
88°
70°
2
87°
70°
3
88°
69°
4
87°
70°
5
86°
70°
6
87°
69°
7
88°
70°
8
87°
71°
9
88°
71°
10
88°
70°
11
87°
71°
12
88°
71°
13
88°
70°
14
87°
70°
15
88°
69°
16
87°
67°
17
87°
71°
18
88°
71°
19
88°
70°
20
87°
70°
21
87°
69°
22
86°
70°
23
87°
69°
24
86°
70°
25
87°
71°
26
88°
70°
27
88°
70°
28
87°
71°
29
87°
70°
30
88°
71°
1
Hist. Avg.
87°
69°
2
Hist. Avg.
87°
69°
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.