S
M
T
W
T
F
S
29
79°
69°
30
80°
69°
1
79°
70°
2
78°
70°
3
79°
72°
4
80°
72°
5
81°
71°
6
81°
71°
7
80°
70°
8
79°
70°
9
80°
71°
10
81°
70°
11
80°
68°
12
80°
68°
13
79°
69°
14
78°
68°
15
77°
70°
16
78°
70°
17
78°
69°
18
79°
70°
19
79°
66°
20
78°
67°
21
77°
67°
22
76°
68°
23
76°
67°
24
77°
69°
25
77°
69°
26
78°
67°
27
79°
68°
28
78°
69°
29
79°
67°
30
79°
66°
31
78°
67°
1
76°
69°
2
78°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Kapa'a
Kapa'a's December 2026 forecast shows daily high temperatures ranging from 76° to 81°, with overnight lows between 66° and 72°. The average high for December is 79° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Kapa'a. See also: January | February | March.
