S
M
T
W
T
F
S
26
82°
71°
27
84°
70°
28
86°
74°
29
86°
72°
30
89°
69°
31
83°
72°
1
82°
72°
2
82°
72°
3
84°
70°
4
85°
71°
5
86°
70°
6
84°
68°
7
86°
71°
8
84°
72°
9
85°
72°
10
84°
72°
11
85°
68°
12
87°
68°
13
87°
69°
14
85°
72°
15
80°
74°
16
80°
75°
17
84°
72°
18
83°
71°
19
85°
68°
20
86°
69°
21
87°
70°
22
86°
73°
23
85°
72°
24
84°
74°
25
84°
73°
26
83°
69°
27
84°
67°
28
83°
69°
29
83°
72°
30
86°
70°
31
83°
70°
1
86°
67°
2
84°
73°
3
81°
72°
4
82°
71°
5
83°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Waipahu
Waipahu's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Waipahu. See also: September | October | November.