S
M
T
W
T
F
S
29
37°
26°
30
42°
22°
1
40°
18°
2
36°
20°
3
35°
18°
4
37°
16°
5
32°
20°
6
36°
30°
7
40°
32°
8
47°
31°
9
50°
28°
10
46°
27°
11
41°
26°
12
39°
23°
13
40°
24°
14
35°
27°
15
36°
24°
16
39°
25°
17
35°
19°
18
35°
17°
19
32°
16°
20
34°
27°
21
38°
25°
22
42°
16°
23
39°
19°
24
32°
27°
25
42°
22°
26
42°
13°
27
38°
17°
28
30°
11°
29
36°
12°
30
28°
13°
31
42°
12°
1
38°
13°
2
33°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Hampton Beach
Hampton Beach's December 2026 forecast shows daily high temperatures ranging from 28° to 50°, with overnight lows between 11° and 32°. The average high for December is 38° with an average low of 21°. 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 Hampton Beach. See also: January | February | March.