S
M
T
W
T
F
S
30
64°
52°
1
66°
52°
2
67°
53°
3
66°
57°
4
65°
58°
5
63°
54°
6
65°
55°
7
63°
52°
8
61°
54°
9
63°
51°
10
63°
47°
11
67°
44°
12
65°
45°
13
63°
49°
14
62°
45°
15
62°
44°
16
62°
43°
17
61°
45°
18
62°
44°
19
62°
45°
20
58°
47°
21
61°
52°
22
60°
54°
23
62°
47°
24
60°
45°
25
62°
48°
26
58°
50°
27
57°
47°
28
63°
39°
29
58°
45°
30
60°
40°
31
54°
41°
1
49°
31°
2
54°
29°
3
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Athens
Athens'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 Athens. See also: January | February | March.