S
M
T
W
T
F
S
28
88°
72°
29
87°
74°
30
87°
72°
1
89°
74°
2
90°
71°
3
87°
70°
4
90°
71°
5
89°
70°
6
90°
71°
7
89°
76°
8
85°
74°
9
84°
74°
10
84°
74°
11
85°
74°
12
84°
73°
13
84°
74°
14
85°
74°
15
84°
73°
16
84°
74°
17
85°
74°
18
84°
74°
19
85°
74°
20
84°
75°
21
84°
75°
22
86°
74°
23
85°
75°
24
85°
75°
25
86°
74°
26
85°
74°
27
84°
75°
28
85°
75°
29
85°
74°
30
86°
75°
31
85°
75°
1
85°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Ko Olina
Ko Olina's July 2026 forecast shows daily high temperatures ranging from 84° to 90°, with overnight lows between 70° and 76°. The average high for July is 86° with an average low of 74°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Ko Olina. See also: August | September | October.