S
M
T
W
T
F
S
30
74°
55°
31
73°
58°
1
78°
55°
2
78°
58°
3
77°
58°
4
76°
52°
5
72°
57°
6
76°
57°
7
74°
56°
8
77°
57°
9
74°
55°
10
71°
56°
11
76°
55°
12
77°
56°
13
76°
55°
14
76°
56°
15
75°
55°
16
76°
56°
17
75°
53°
18
75°
48°
19
69°
47°
20
69°
45°
21
68°
46°
22
68°
47°
23
70°
48°
24
72°
45°
25
70°
49°
26
72°
51°
27
71°
50°
28
71°
49°
29
70°
50°
30
71°
48°
1
69°
47°
2
72°
48°
3
Hist. Avg.
69°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Osaka
Osaka's September 2026 forecast shows daily high temperatures ranging from 68° to 78°, with overnight lows between 45° and 58°. The average high for September is 73° with an average low of 52°. 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 Osaka. See also: October | November | December.
