S
M
T
W
T
F
S
30
82°
75°
31
82°
76°
1
83°
74°
2
84°
74°
3
83°
74°
4
83°
74°
5
83°
72°
6
84°
71°
7
84°
76°
8
83°
77°
9
83°
76°
10
N/A
11
88°
67°
12
89°
66°
13
88°
66°
14
89°
64°
15
91°
66°
16
89°
69°
17
84°
68°
18
85°
72°
19
87°
71°
20
87°
71°
21
86°
70°
22
86°
70°
23
87°
71°
24
86°
67°
25
86°
68°
26
88°
68°
27
88°
69°
28
87°
67°
29
87°
68°
30
89°
69°
1
89°
69°
2
88°
70°
3
90°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in São Francisco do Conde
São Francisco do Conde's September 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 64° and 72°. The average high for September is 88° with an average low of 69°. 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 São Francisco do Conde. See also: October | November | December.