S
M
T
W
T
F
S
26
89°
73°
27
84°
72°
28
82°
73°
29
83°
72°
30
84°
71°
31
84°
73°
1
88°
74°
2
88°
73°
3
87°
74°
4
84°
73°
5
85°
71°
6
85°
71°
7
84°
70°
8
84°
70°
9
85°
71°
10
87°
72°
11
88°
72°
12
87°
73°
13
88°
72°
14
89°
73°
15
88°
74°
16
89°
70°
17
84°
69°
18
83°
69°
19
83°
68°
20
84°
69°
21
84°
69°
22
85°
68°
23
84°
69°
24
85°
68°
25
84°
68°
26
82°
67°
27
Hist. Avg.
84°
67°
28
Hist. Avg.
83°
66°
29
Hist. Avg.
83°
66°
30
Hist. Avg.
83°
65°
31
Hist. Avg.
82°
65°
1
Hist. Avg.
82°
65°
2
Hist. Avg.
82°
64°
3
Hist. Avg.
82°
64°
4
Hist. Avg.
81°
63°
5
Hist. Avg.
81°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Seoul
Seoul's August 2026 forecast shows daily high temperatures ranging from 82° to 89°, with overnight lows between 67° and 74°. The average high for August is 85° with an average low of 71°. 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 Seoul. See also: September | October | November.