S
M
T
W
T
F
S
26
88°
77°
27
87°
76°
28
87°
76°
29
88°
75°
30
88°
76°
31
87°
76°
1
88°
75°
2
86°
77°
3
88°
77°
4
87°
76°
5
86°
76°
6
87°
75°
7
87°
77°
8
86°
75°
9
87°
74°
10
86°
75°
11
87°
74°
12
86°
76°
13
85°
77°
14
86°
76°
15
87°
76°
16
90°
76°
17
89°
77°
18
Hist. Avg.
85°
75°
19
Hist. Avg.
85°
75°
20
Hist. Avg.
85°
75°
21
Hist. Avg.
85°
75°
22
Hist. Avg.
85°
74°
23
Hist. Avg.
84°
74°
24
Hist. Avg.
84°
74°
25
Hist. Avg.
84°
74°
26
Hist. Avg.
84°
73°
27
Hist. Avg.
83°
73°
28
Hist. Avg.
83°
73°
29
Hist. Avg.
83°
73°
30
Hist. Avg.
83°
72°
31
Hist. Avg.
82°
72°
1
Hist. Avg.
82°
72°
2
Hist. Avg.
82°
72°
3
Hist. Avg.
81°
71°
4
Hist. Avg.
81°
71°
5
Hist. Avg.
81°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Jeju
Jeju's August 2026 forecast shows daily high temperatures ranging from 85° to 90°, with overnight lows between 74° and 77°. The average high for August is 87° with an average low of 76°. 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.