S
M
T
W
T
F
S
26
73°
55°
27
73°
54°
28
72°
55°
29
71°
54°
30
69°
54°
1
70°
55°
2
67°
55°
3
65°
54°
4
65°
54°
5
69°
53°
6
72°
55°
7
72°
55°
8
71°
54°
9
64°
53°
10
63°
53°
11
63°
52°
12
64°
53°
13
63°
50°
14
62°
50°
15
63°
50°
16
67°
52°
17
67°
53°
18
68°
51°
19
68°
51°
20
64°
52°
21
65°
51°
22
65°
49°
23
64°
51°
24
67°
51°
25
64°
52°
26
67°
50°
27
66°
50°
28
61°
49°
29
61°
42°
30
62°
42°
31
61°
43°
1
60°
47°
2
61°
46°
3
63°
47°
4
66°
49°
5
65°
51°
6
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Adelaide
Adelaide's May 2026 forecast shows daily high temperatures ranging from 60° to 73°, with overnight lows between 42° and 55°. The average high for May is 66° with an average low of 51°. 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 Adelaide. See also: June | July | August.