S
M
T
W
T
F
S
30
96°
69°
31
98°
71°
1
98°
72°
2
97°
72°
3
95°
68°
4
94°
66°
5
97°
65°
6
94°
63°
7
93°
64°
8
93°
65°
9
89°
62°
10
86°
56°
11
81°
54°
12
85°
58°
13
85°
59°
14
79°
58°
15
80°
58°
16
82°
57°
17
82°
57°
18
83°
56°
19
83°
57°
20
82°
57°
21
82°
56°
22
81°
56°
23
82°
55°
24
82°
54°
25
81°
53°
26
81°
54°
27
82°
53°
28
82°
53°
29
81°
52°
30
81°
52°
1
80°
51°
2
81°
52°
3
80°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cuba
Cuba's September 2026 forecast shows daily high temperatures ranging from 79° to 98°, with overnight lows between 51° and 72°. The average high for September is 86° with an average low of 59°. 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 Cuba. See also: October | November | December.