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