S
M
T
W
T
F
S
30
90°
70°
31
89°
71°
1
85°
67°
2
85°
65°
3
86°
65°
4
84°
64°
5
84°
65°
6
87°
65°
7
87°
69°
8
88°
64°
9
85°
64°
10
88°
67°
11
88°
68°
12
84°
69°
13
89°
69°
14
89°
68°
15
88°
67°
16
87°
66°
17
88°
67°
18
86°
67°
19
85°
66°
20
85°
65°
21
86°
64°
22
85°
60°
23
Hist. Avg.
83°
59°
24
Hist. Avg.
83°
58°
25
Hist. Avg.
82°
58°
26
Hist. Avg.
82°
58°
27
Hist. Avg.
82°
57°
28
Hist. Avg.
82°
57°
29
Hist. Avg.
81°
57°
30
Hist. Avg.
81°
56°
1
Hist. Avg.
80°
56°
2
Hist. Avg.
80°
55°
3
Hist. Avg.
80°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Athens
Athens's September 2026 forecast shows daily high temperatures ranging from 84° to 90°, with overnight lows between 60° and 71°. The average high for September is 87° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Athens. See also: October | November | December.
