S
M
T
W
T
F
S
31
88°
81°
1
87°
82°
2
87°
83°
3
88°
83°
4
87°
84°
5
87°
83°
6
88°
83°
7
87°
82°
8
87°
83°
9
88°
83°
10
87°
82°
11
88°
84°
12
88°
83°
13
89°
81°
14
88°
82°
15
88°
82°
16
89°
83°
17
87°
83°
18
88°
84°
19
90°
84°
20
88°
83°
21
88°
83°
22
89°
82°
23
88°
83°
24
87°
83°
25
88°
82°
26
87°
83°
27
87°
83°
28
88°
81°
29
89°
79°
30
88°
79°
1
88°
80°
2
90°
80°
3
89°
82°
4
88°
83°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Ko Samui
Ko Samui's June 2026 forecast shows daily high temperatures ranging from 87° to 90°, with overnight lows between 79° and 84°. The average high for June is 88° with an average low of 82°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Ko Samui. See also: July | August | September.
