S
M
T
W
T
F
S
30
84°
70°
31
84°
69°
1
85°
69°
2
84°
70°
3
84°
69°
4
85°
70°
5
84°
69°
6
85°
70°
7
84°
69°
8
85°
70°
9
84°
70°
10
84°
71°
11
85°
71°
12
85°
70°
13
86°
71°
14
85°
70°
15
85°
69°
16
83°
68°
17
83°
71°
18
84°
71°
19
84°
70°
20
85°
70°
21
84°
69°
22
83°
70°
23
83°
70°
24
84°
69°
25
83°
70°
26
84°
69°
27
84°
70°
28
83°
68°
29
84°
68°
30
83°
69°
1
Hist. Avg.
85°
75°
2
Hist. Avg.
85°
74°
3
Hist. Avg.
85°
74°
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 83° to 86°, with overnight lows between 68° and 71°. The average high for September is 84° 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 Hanalei. See also: October | November | December.
