S
M
T
W
T
F
S
26
89°
81°
27
91°
81°
28
93°
81°
29
92°
80°
30
92°
81°
1
90°
79°
2
89°
79°
3
90°
80°
4
84°
82°
5
84°
81°
6
85°
82°
7
84°
80°
8
83°
82°
9
84°
80°
10
84°
82°
11
85°
82°
12
83°
81°
13
83°
82°
14
84°
82°
15
85°
81°
16
86°
81°
17
85°
82°
18
85°
82°
19
86°
81°
20
84°
82°
21
84°
82°
22
85°
80°
23
82°
81°
24
82°
82°
25
82°
81°
26
83°
82°
27
82°
81°
28
83°
81°
29
82°
80°
30
82°
81°
31
83°
80°
1
83°
78°
2
84°
80°
3
84°
78°
4
83°
78°
5
83°
77°
6
84°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Diego Garcia
Diego Garcia's May 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 77° and 82°. The average high for May is 85° with an average low of 81°. 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 Diego Garcia. See also: June | July | August.
