S
M
T
W
T
F
S
29
76°
69°
30
76°
66°
31
77°
68°
1
77°
68°
2
76°
70°
3
77°
70°
4
78°
69°
5
77°
67°
6
78°
69°
7
79°
70°
8
77°
65°
9
80°
73°
10
76°
71°
11
77°
71°
12
77°
70°
13
80°
68°
14
80°
72°
15
80°
73°
16
80°
72°
17
80°
73°
18
80°
74°
19
80°
73°
20
80°
71°
21
80°
70°
22
80°
71°
23
80°
73°
24
80°
72°
25
80°
73°
26
81°
72°
27
80°
69°
28
80°
73°
29
80°
73°
30
82°
71°
1
82°
70°
2
83°
70°
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 82° to 83°, with overnight lows between 70° and 71°. The average high for April 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 April weather will actually feel in Kailua. See also: May | June | July.