S
M
T
W
T
F
S
30
89°
75°
31
85°
75°
1
86°
74°
2
90°
74°
3
88°
73°
4
87°
72°
5
89°
74°
6
89°
73°
7
90°
73°
8
90°
74°
9
89°
73°
10
89°
73°
11
89°
73°
12
88°
72°
13
88°
74°
14
89°
71°
15
86°
73°
16
85°
72°
17
86°
73°
18
85°
73°
19
86°
72°
20
86°
73°
21
85°
73°
22
85°
72°
23
86°
73°
24
85°
73°
25
85°
72°
26
87°
72°
27
86°
73°
28
86°
73°
29
85°
72°
30
86°
73°
1
86°
73°
2
87°
72°
3
85°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kahului
Kahului'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 Kahului. See also: October | November | December.
