S
M
T
W
T
F
S
30
73°
60°
31
81°
61°
1
82°
59°
2
78°
57°
3
79°
52°
4
72°
52°
5
75°
57°
6
Hist. Avg.
70°
54°
7
Hist. Avg.
70°
54°
8
Hist. Avg.
70°
54°
9
Hist. Avg.
69°
53°
10
Hist. Avg.
69°
53°
11
Hist. Avg.
69°
53°
12
Hist. Avg.
68°
53°
13
Hist. Avg.
68°
52°
14
Hist. Avg.
68°
52°
15
Hist. Avg.
68°
52°
16
Hist. Avg.
67°
51°
17
Hist. Avg.
67°
51°
18
Hist. Avg.
66°
51°
19
Hist. Avg.
66°
50°
20
Hist. Avg.
66°
50°
21
Hist. Avg.
65°
50°
22
Hist. Avg.
65°
49°
23
Hist. Avg.
65°
49°
24
Hist. Avg.
64°
49°
25
Hist. Avg.
64°
48°
26
Hist. Avg.
63°
48°
27
Hist. Avg.
63°
48°
28
Hist. Avg.
63°
47°
29
Hist. Avg.
62°
47°
30
Hist. Avg.
62°
47°
1
Hist. Avg.
61°
46°
2
Hist. Avg.
61°
46°
3
Hist. Avg.
61°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lisbon
Lisbon's September 2026 forecast shows daily high temperatures ranging from 72° to 82°, with overnight lows between 52° and 61°. The average high for September is 77° with an average low of 57°. 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 Lisbon. See also: October | November | December.
