S
M
T
W
T
F
S
30
70°
59°
31
75°
58°
1
74°
55°
2
75°
58°
3
69°
53°
4
69°
52°
5
68°
53°
6
68°
54°
7
69°
54°
8
68°
55°
9
71°
54°
10
74°
56°
11
76°
59°
12
77°
61°
13
77°
61°
14
76°
60°
15
77°
61°
16
77°
60°
17
76°
61°
18
77°
61°
19
78°
60°
20
78°
61°
21
77°
60°
22
77°
61°
23
76°
61°
24
77°
62°
25
71°
58°
26
74°
61°
27
74°
62°
28
76°
61°
29
77°
57°
30
76°
56°
1
70°
57°
2
70°
58°
3
71°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sao Paulo
Sao Paulo's September 2026 forecast shows daily high temperatures ranging from 68° to 78°, with overnight lows between 52° and 62°. The average high for September is 74° with an average low of 58°. 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 Sao Paulo. See also: October | November | December.
