S
M
T
W
T
F
S
26
80°
72°
27
78°
72°
28
79°
71°
29
79°
72°
30
80°
72°
31
79°
71°
1
80°
71°
2
79°
72°
3
79°
72°
4
80°
71°
5
79°
72°
6
79°
72°
7
80°
71°
8
79°
72°
9
79°
72°
10
80°
71°
11
79°
72°
12
79°
72°
13
80°
71°
14
79°
72°
15
80°
72°
16
79°
71°
17
82°
70°
18
83°
71°
19
83°
71°
20
82°
70°
21
83°
71°
22
82°
70°
23
82°
70°
24
83°
71°
25
82°
71°
26
83°
70°
27
83°
71°
28
82°
70°
29
82°
71°
30
83°
71°
31
82°
70°
1
82°
70°
2
83°
69°
3
83°
71°
4
84°
71°
5
84°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Kapa'au
Kapa'au's August 2026 forecast shows daily high temperatures ranging from 78° to 84°, with overnight lows between 69° and 72°. The average high for August is 81° with an average low of 71°. 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 Kapa'au. See also: September | October | November.