S
M
T
W
T
F
S
27
66°
51°
28
68°
50°
29
70°
47°
30
78°
50°
1
64°
49°
2
65°
47°
3
57°
48°
4
68°
47°
5
59°
49°
6
68°
43°
7
70°
50°
8
77°
49°
9
63°
58°
10
60°
53°
11
68°
53°
12
74°
50°
13
78°
56°
14
80°
57°
15
72°
62°
16
72°
63°
17
76°
56°
18
70°
52°
19
70°
51°
20
81°
63°
21
87°
71°
22
83°
68°
23
72°
57°
24
67°
54°
25
73°
53°
26
79°
55°
27
81°
58°
28
80°
61°
29
81°
60°
30
83°
62°
31
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Seoul
Seoul's May 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Seoul. See also: June | July | August.