S
M
T
W
T
F
S
29
76°
66°
30
77°
65°
31
78°
65°
1
79°
61°
2
78°
66°
3
73°
60°
4
76°
58°
5
76°
61°
6
76°
61°
7
77°
63°
8
73°
64°
9
75°
64°
10
74°
62°
11
73°
61°
12
73°
63°
13
74°
62°
14
74°
62°
15
73°
61°
16
76°
63°
17
73°
64°
18
74°
64°
19
74°
63°
20
75°
64°
21
74°
64°
22
74°
63°
23
75°
64°
24
74°
64°
25
74°
63°
26
73°
64°
27
74°
64°
28
74°
63°
29
75°
63°
30
74°
64°
1
74°
64°
2
75°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Kailua
Kailua's April 2026 forecast shows daily high temperatures ranging from 73° to 77°, with overnight lows between 58° and 64°. The average high for April is 74° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Kailua. See also: May | June | July.