S
M
T
W
T
F
S
29
79°
69°
30
80°
69°
1
79°
70°
2
79°
71°
3
80°
71°
4
79°
68°
5
80°
68°
6
79°
69°
7
77°
68°
8
78°
70°
9
79°
70°
10
79°
69°
11
80°
70°
12
81°
70°
13
80°
71°
14
81°
70°
15
81°
71°
16
79°
66°
17
81°
71°
18
81°
71°
19
80°
70°
20
81°
70°
21
79°
69°
22
79°
69°
23
78°
68°
24
79°
69°
25
78°
66°
26
79°
67°
27
76°
68°
28
77°
67°
29
79°
67°
30
78°
66°
31
77°
67°
1
Hist. Avg.
79°
67°
2
Hist. Avg.
79°
67°
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 71°. 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.
