S
M
T
W
T
F
S
26
74°
61°
27
75°
62°
28
78°
63°
29
76°
63°
30
78°
62°
31
79°
63°
1
76°
63°
2
79°
64°
3
80°
64°
4
81°
63°
5
80°
64°
6
81°
64°
7
81°
63°
8
80°
61°
9
74°
57°
10
74°
59°
11
76°
62°
12
77°
63°
13
79°
63°
14
80°
62°
15
79°
63°
16
75°
61°
17
77°
56°
18
79°
55°
19
80°
55°
20
81°
57°
21
80°
59°
22
79°
61°
23
80°
61°
24
77°
60°
25
74°
58°
26
74°
58°
27
75°
56°
28
73°
58°
29
73°
57°
30
74°
55°
31
73°
58°
1
78°
55°
2
78°
58°
3
77°
58°
4
76°
52°
5
72°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Osaka
Osaka's August 2026 forecast shows daily high temperatures ranging from 72° to 81°, with overnight lows between 52° and 64°. The average high for August is 77° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Osaka. See also: September | October | November.