S
M
T
W
T
F
S
30
83°
74°
31
85°
75°
1
82°
74°
2
85°
75°
3
83°
74°
4
84°
73°
5
84°
73°
6
85°
74°
7
88°
76°
8
86°
71°
9
85°
71°
10
89°
75°
11
86°
72°
12
86°
67°
13
85°
69°
14
85°
73°
15
90°
73°
16
85°
73°
17
87°
75°
18
88°
76°
19
85°
75°
20
88°
74°
21
86°
75°
22
85°
75°
23
89°
74°
24
87°
73°
25
89°
72°
26
88°
73°
27
87°
72°
28
89°
71°
29
88°
71°
30
88°
72°
1
88°
70°
2
85°
73°
3
85°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kaunakakai
Kaunakakai's September 2026 forecast shows daily high temperatures ranging from 85° to 89°, with overnight lows between 70° and 76°. 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 Kaunakakai. See also: October | November | December.
