S
M
T
W
T
F
S
30
92°
78°
1
92°
77°
2
94°
75°
3
95°
76°
4
93°
74°
5
90°
77°
6
90°
74°
7
90°
69°
8
91°
71°
9
92°
75°
10
92°
78°
11
92°
73°
12
91°
71°
13
91°
74°
14
92°
70°
15
94°
73°
16
94°
75°
17
93°
75°
18
87°
74°
19
88°
76°
20
89°
74°
21
90°
74°
22
90°
75°
23
90°
77°
24
89°
78°
25
90°
75°
26
90°
77°
27
91°
77°
28
89°
77°
29
89°
76°
30
84°
73°
31
86°
75°
1
87°
75°
2
88°
74°
3
88°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Trinity Beach
Trinity Beach's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Trinity Beach. See also: January | February | March.