S
M
T
W
T
F
S
30
83°
76°
31
84°
75°
1
85°
77°
2
88°
76°
3
87°
75°
4
87°
76°
5
88°
75°
6
87°
77°
7
88°
78°
8
89°
78°
9
88°
76°
10
89°
75°
11
89°
74°
12
88°
76°
13
89°
75°
14
89°
75°
15
88°
76°
16
86°
75°
17
85°
76°
18
85°
76°
19
85°
76°
20
86°
75°
21
85°
76°
22
85°
76°
23
86°
75°
24
85°
76°
25
85°
76°
26
86°
75°
27
85°
76°
28
85°
76°
29
86°
75°
30
86°
75°
1
85°
76°
2
85°
75°
3
86°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in East Honolulu
East Honolulu's September 2026 forecast shows daily high temperatures ranging from 85° to 89°, with overnight lows between 74° and 78°. The average high for September is 87° with an average low of 76°. 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 East Honolulu. See also: October | November | December.