S
M
T
W
T
F
S
26
81°
72°
27
80°
69°
28
80°
73°
29
80°
73°
30
80°
72°
1
82°
71°
2
82°
71°
3
81°
71°
4
83°
69°
5
81°
68°
6
82°
71°
7
83°
72°
8
82°
72°
9
83°
71°
10
82°
70°
11
82°
68°
12
81°
69°
13
82°
68°
14
81°
71°
15
79°
73°
16
80°
73°
17
79°
72°
18
79°
72°
19
80°
73°
20
79°
73°
21
79°
72°
22
80°
73°
23
79°
73°
24
79°
72°
25
80°
73°
26
79°
72°
27
80°
72°
28
79°
73°
29
79°
74°
30
80°
73°
31
79°
73°
1
80°
74°
2
80°
74°
3
81°
73°
4
80°
74°
5
80°
74°
6
81°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Kailua
Kailua's May 2026 forecast shows daily high temperatures ranging from 79° to 83°, with overnight lows between 68° and 74°. The average high for May is 80° with an average low of 72°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Kailua. See also: June | July | August.
