S
M
T
W
T
F
S
30
86°
79°
31
86°
80°
1
86°
79°
2
87°
79°
3
86°
78°
4
87°
80°
5
86°
80°
6
86°
79°
7
87°
80°
8
86°
79°
9
85°
78°
10
86°
79°
11
86°
79°
12
85°
78°
13
86°
79°
14
86°
79°
15
85°
78°
16
86°
79°
17
85°
80°
18
87°
79°
19
86°
79°
20
87°
78°
21
87°
79°
22
86°
78°
23
85°
79°
24
86°
78°
25
86°
80°
26
86°
78°
27
86°
78°
28
86°
79°
29
85°
78°
30
Hist. Avg.
86°
77°
1
Hist. Avg.
86°
77°
2
Hist. Avg.
86°
77°
3
Hist. Avg.
86°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Asuncion
Asuncion's September 2026 forecast shows daily high temperatures ranging from 85° to 87°, with overnight lows between 78° and 80°. The average high for September is 86° with an average low of 79°. 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 Asuncion. See also: October | November | December.