S
M
T
W
T
F
S
26
65°
52°
27
66°
54°
28
69°
55°
29
70°
55°
30
70°
54°
1
70°
56°
2
71°
56°
3
70°
55°
4
71°
56°
5
71°
55°
6
69°
56°
7
67°
57°
8
68°
58°
9
72°
57°
10
72°
58°
11
71°
58°
12
73°
57°
13
72°
58°
14
69°
57°
15
69°
55°
16
70°
55°
17
69°
56°
18
69°
56°
19
70°
57°
20
70°
55°
21
69°
56°
22
74°
59°
23
75°
58°
24
73°
58°
25
74°
57°
26
73°
60°
27
75°
60°
28
75°
61°
29
76°
61°
30
77°
62°
31
77°
63°
1
79°
61°
2
79°
60°
3
78°
61°
4
77°
58°
5
76°
60°
6
77°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cagliari
Cagliari's May 2026 forecast shows daily high temperatures ranging from 65° to 79°, with overnight lows between 52° and 63°. The average high for May is 72° with an average low of 58°. 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 Cagliari. See also: June | July | August.