S
M
T
W
T
F
S
30
87°
73°
31
88°
72°
1
87°
72°
2
87°
71°
3
86°
72°
4
87°
73°
5
87°
72°
6
86°
72°
7
87°
71°
8
87°
71°
9
86°
70°
10
86°
69°
11
85°
69°
12
85°
70°
13
86°
71°
14
87°
72°
15
86°
70°
16
87°
71°
17
86°
72°
18
87°
71°
19
87°
72°
20
86°
72°
21
87°
71°
22
87°
72°
23
86°
72°
24
87°
71°
25
87°
71°
26
86°
68°
27
86°
72°
28
85°
71°
29
86°
70°
30
86°
70°
1
85°
69°
2
85°
69°
3
86°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kawailoa Beach
Kawailoa Beach's September 2026 forecast shows daily high temperatures ranging from 85° to 88°, with overnight lows between 68° and 73°. The average high for September is 86° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Kawailoa Beach. See also: October | November | December.
