S
M
T
W
T
F
S
31
86°
79°
1
88°
81°
2
86°
81°
3
86°
81°
4
86°
79°
5
84°
79°
6
84°
79°
7
86°
79°
8
86°
79°
9
84°
81°
10
86°
78°
11
86°
81°
12
84°
81°
13
84°
79°
14
86°
79°
15
84°
79°
16
84°
78°
17
85°
79°
18
85°
78°
19
86°
79°
20
86°
80°
21
87°
80°
22
88°
80°
23
87°
79°
24
89°
79°
25
88°
79°
26
87°
80°
27
87°
78°
28
88°
79°
29
81°
80°
30
82°
80°
1
81°
80°
2
81°
79°
3
82°
80°
4
81°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Diego Garcia
Diego Garcia's June 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 78° and 80°. The average high for June is 85° with an average low of 79°. 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 Diego Garcia. See also: July | August | September.
