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
90°
77°
8
90°
78°
9
90°
78°
10
89°
78°
11
90°
78°
12
89°
75°
13
88°
77°
14
89°
78°
15
88°
77°
16
85°
77°
17
88°
76°
18
87°
75°
19
88°
76°
20
89°
76°
21
88°
75°
22
88°
76°
23
89°
75°
24
88°
76°
25
89°
75°
26
88°
76°
27
86°
77°
28
86°
77°
29
85°
77°
30
85°
76°
31
86°
75°
1
85°
77°
2
85°
77°
3
86°
76°
4
86°
76°
5
87°
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 78°. 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.
