S
M
T
W
T
F
S
30
91°
73°
31
95°
73°
1
99°
77°
2
99°
81°
3
95°
79°
4
N/A
5
97°
69°
6
99°
73°
7
96°
71°
8
92°
68°
9
94°
66°
10
90°
69°
11
94°
66°
12
95°
65°
13
96°
66°
14
95°
66°
15
95°
65°
16
91°
62°
17
90°
63°
18
93°
63°
19
92°
62°
20
91°
61°
21
92°
62°
22
89°
59°
23
83°
58°
24
81°
60°
25
82°
60°
26
82°
59°
27
83°
58°
28
83°
55°
29
81°
54°
30
80°
58°
1
81°
57°
2
82°
57°
3
80°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Nafplio
Nafplio's September 2026 forecast shows daily high temperatures ranging from 80° to 99°, with overnight lows between 54° and 73°. The average high for September is 89° with an average low of 62°. 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 Nafplio. See also: October | November | December.