S
M
T
W
T
F
S
30
91°
66°
31
93°
71°
1
94°
71°
2
96°
71°
3
97°
70°
4
95°
71°
5
87°
65°
6
81°
57°
7
85°
63°
8
85°
63°
9
89°
63°
10
83°
57°
11
82°
56°
12
84°
59°
13
82°
57°
14
81°
59°
15
80°
55°
16
80°
50°
17
80°
55°
18
72°
55°
19
80°
56°
20
76°
55°
21
75°
55°
22
76°
53°
23
75°
49°
24
70°
52°
25
77°
53°
26
75°
49°
27
68°
44°
28
66°
42°
29
65°
41°
30
66°
43°
1
65°
41°
2
66°
49°
3
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sardinia
Sardinia's September 2026 forecast shows daily high temperatures ranging from 65° to 97°, with overnight lows between 41° and 71°. The average high for September is 78° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Sardinia. See also: October | November | December.