S
M
T
W
T
F
S
30
70°
62°
31
70°
63°
1
81°
68°
2
85°
68°
3
83°
67°
4
78°
62°
5
74°
58°
6
69°
55°
7
75°
50°
8
79°
53°
9
76°
64°
10
77°
59°
11
73°
52°
12
80°
52°
13
82°
62°
14
67°
49°
15
76°
63°
16
72°
64°
17
76°
59°
18
73°
55°
19
72°
62°
20
69°
56°
21
66°
57°
22
67°
54°
23
71°
54°
24
69°
52°
25
69°
53°
26
68°
54°
27
73°
55°
28
73°
55°
29
68°
53°
30
66°
54°
1
69°
55°
2
72°
53°
3
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Greece
Greece's September 2026 forecast shows daily high temperatures ranging from 66° to 76°, with overnight lows between 49° and 64°. The average high for September is 70° with an average low of 55°. 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 Greece. See also: October | November | December.