S
M
T
W
T
F
S
26
65°
53°
27
67°
54°
28
66°
57°
29
68°
55°
30
64°
54°
1
66°
56°
2
66°
56°
3
67°
54°
4
65°
53°
5
66°
57°
6
68°
58°
7
67°
58°
8
67°
57°
9
68°
58°
10
69°
59°
11
69°
60°
12
70°
60°
13
70°
59°
14
69°
60°
15
69°
61°
16
70°
59°
17
68°
56°
18
68°
58°
19
69°
57°
20
68°
56°
21
69°
57°
22
71°
61°
23
69°
61°
24
70°
60°
25
71°
59°
26
71°
60°
27
73°
62°
28
75°
64°
29
74°
59°
30
73°
59°
31
73°
60°
1
74°
60°
2
75°
59°
3
74°
59°
4
75°
60°
5
74°
61°
6
74°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Jeju
Jeju's May 2026 forecast shows daily high temperatures ranging from 64° to 75°, with overnight lows between 53° and 64°. The average high for May is 70° with an average low of 58°. 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 Jeju. See also: June | July | August.
