S
M
T
W
T
F
S
30
86°
78°
31
85°
74°
1
86°
76°
2
86°
76°
3
87°
75°
4
86°
75°
5
85°
75°
6
86°
72°
7
86°
71°
8
87°
72°
9
86°
71°
10
85°
71°
11
85°
71°
12
86°
70°
13
84°
72°
14
85°
71°
15
82°
71°
16
81°
70°
17
81°
70°
18
82°
71°
19
81°
72°
20
82°
72°
21
81°
71°
22
81°
70°
23
82°
70°
24
81°
71°
25
81°
72°
26
82°
72°
27
81°
70°
28
81°
70°
29
80°
72°
30
81°
72°
1
81°
70°
2
82°
72°
3
81°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hanalei
Hanalei's September 2026 forecast shows daily high temperatures ranging from 80° to 87°, with overnight lows between 70° and 76°. The average high for September is 83° 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 Hanalei. See also: October | November | December.
