S
M
T
W
T
F
S
28
88°
76°
29
88°
75°
30
88°
76°
1
87°
77°
2
89°
77°
3
87°
75°
4
87°
75°
5
88°
75°
6
84°
70°
7
83°
71°
8
84°
73°
9
84°
73°
10
85°
74°
11
84°
70°
12
85°
69°
13
83°
68°
14
82°
70°
15
84°
69°
16
84°
68°
17
85°
69°
18
84°
68°
19
82°
70°
20
79°
70°
21
80°
70°
22
80°
70°
23
81°
69°
24
80°
71°
25
79°
71°
26
80°
70°
27
80°
71°
28
81°
71°
29
80°
70°
30
79°
71°
31
80°
71°
1
79°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Kailua
Kailua's July 2026 forecast shows daily high temperatures ranging from 79° to 85°, with overnight lows between 68° and 74°. The average high for July is 82° with an average low of 70°. 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 Kailua. See also: August | September | October.