S
M
T
W
T
F
S
30
87°
76°
31
88°
76°
1
89°
77°
2
89°
76°
3
88°
78°
4
88°
75°
5
89°
76°
6
87°
76°
7
88°
78°
8
87°
78°
9
89°
74°
10
89°
79°
11
89°
77°
12
89°
73°
13
89°
73°
14
89°
74°
15
90°
75°
16
91°
76°
17
89°
79°
18
90°
80°
19
89°
78°
20
90°
79°
21
88°
77°
22
90°
78°
23
89°
80°
24
89°
79°
25
88°
78°
26
87°
78°
27
89°
79°
28
90°
78°
29
89°
73°
30
86°
76°
1
85°
77°
2
85°
76°
3
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Honolulu
Honolulu's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Honolulu. See also: October | November | December.
