S
M
T
W
T
F
S
29
48°
36°
30
53°
38°
1
52°
37°
2
52°
37°
3
54°
36°
4
50°
35°
5
52°
33°
6
50°
35°
7
53°
34°
8
45°
31°
9
43°
29°
10
42°
27°
11
40°
31°
12
42°
30°
13
45°
28°
14
42°
24°
15
41°
25°
16
40°
27°
17
41°
26°
18
40°
31°
19
49°
30°
20
49°
22°
21
42°
22°
22
38°
23°
23
37°
24°
24
40°
25°
25
43°
22°
26
48°
17°
27
38°
17°
28
33°
18°
29
36°
18°
30
36°
24°
31
39°
26°
1
49°
19°
2
46°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Westhampton Beach
Westhampton Beach's December 2026 forecast shows daily high temperatures ranging from 33° to 54°, with overnight lows between 15° and 38°. The average high for December is 44° with an average low of 27°. 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 Westhampton Beach. See also: January | February | March.
