S
M
T
W
T
F
S
26
87°
77°
27
90°
77°
28
91°
76°
29
88°
78°
30
87°
79°
31
87°
78°
1
88°
76°
2
88°
78°
3
85°
77°
4
88°
77°
5
88°
78°
6
85°
77°
7
85°
75°
8
85°
74°
9
85°
74°
10
86°
76°
11
85°
69°
12
84°
70°
13
85°
69°
14
84°
70°
15
85°
70°
16
84°
69°
17
83°
70°
18
84°
68°
19
83°
70°
20
80°
71°
21
79°
71°
22
80°
70°
23
80°
71°
24
82°
71°
25
81°
70°
26
81°
71°
27
80°
71°
28
81°
70°
29
81°
70°
30
80°
71°
31
81°
71°
1
82°
70°
2
81°
71°
3
81°
71°
4
80°
70°
5
81°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mauna Kea
Mauna Kea's August 2026 forecast shows daily high temperatures ranging from 79° to 86°, with overnight lows between 68° and 77°. The average high for August is 82° 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 Mauna Kea. See also: September | October | November.