S
M
T
W
T
F
S
26
85°
73°
27
89°
73°
28
89°
72°
29
89°
73°
30
88°
72°
31
89°
72°
1
89°
72°
2
89°
72°
3
88°
71°
4
89°
72°
5
88°
73°
6
89°
73°
7
90°
72°
8
89°
73°
9
90°
73°
10
89°
72°
11
89°
73°
12
88°
73°
13
90°
72°
14
89°
73°
15
89°
73°
16
90°
74°
17
90°
74°
18
89°
73°
19
90°
74°
20
90°
74°
21
91°
73°
22
91°
74°
23
90°
72°
24
90°
73°
25
89°
72°
26
90°
73°
27
90°
73°
28
89°
72°
29
90°
73°
30
90°
72°
31
89°
72°
1
90°
73°
2
90°
69°
3
89°
72°
4
90°
73°
5
90°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Kahului
Kahului's August 2026 forecast shows daily high temperatures ranging from 85° to 91°, with overnight lows between 69° and 74°. The average high for August is 89° with an average low of 73°. 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 Kahului. See also: September | October | November.