S
M
T
W
T
F
S
27
89°
79°
28
88°
80°
29
87°
77°
30
87°
77°
1
88°
78°
2
84°
79°
3
86°
75°
4
88°
76°
5
87°
78°
6
83°
70°
7
84°
73°
8
86°
73°
9
86°
75°
10
84°
74°
11
82°
69°
12
82°
70°
13
83°
70°
14
82°
69°
15
83°
68°
16
82°
66°
17
83°
69°
18
83°
69°
19
82°
68°
20
79°
69°
21
78°
70°
22
78°
70°
23
79°
69°
24
79°
70°
25
80°
70°
26
79°
69°
27
79°
70°
28
80°
70°
29
79°
69°
30
79°
70°
31
80°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Kailua
Kailua's October 2026 forecast shows daily high temperatures ranging from 78° to 86°, with overnight lows between 66° and 75°. The average high for October is 81° 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 October weather will actually feel in Kailua. See also: November | December | January.