S
M
T
W
T
F
S
26
85°
77°
27
86°
73°
28
86°
73°
29
87°
74°
30
86°
76°
31
86°
76°
1
86°
76°
2
87°
74°
3
85°
76°
4
87°
75°
5
86°
76°
6
85°
74°
7
85°
72°
8
86°
73°
9
85°
73°
10
85°
74°
11
86°
73°
12
85°
75°
13
85°
74°
14
86°
75°
15
85°
76°
16
86°
75°
17
86°
76°
18
85°
76°
19
85°
75°
20
86°
73°
21
85°
72°
22
84°
72°
23
85°
74°
24
84°
73°
25
83°
74°
26
84°
73°
27
83°
75°
28
84°
71°
29
84°
71°
30
82°
70°
31
82°
70°
1
81°
71°
2
83°
71°
3
82°
70°
4
81°
69°
5
82°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Jeju
Jeju's August 2026 forecast shows daily high temperatures ranging from 81° to 87°, with overnight lows between 69° and 77°. The average high for August is 85° with an average low of 73°. 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 Jeju. See also: September | October | November.
