S
M
T
W
T
F
S
30
90°
69°
31
92°
73°
1
94°
69°
2
94°
72°
3
94°
73°
4
94°
73°
5
95°
71°
6
85°
64°
7
83°
59°
8
92°
71°
9
85°
67°
10
82°
55°
11
84°
64°
12
85°
63°
13
81°
62°
14
85°
61°
15
80°
54°
16
79°
53°
17
74°
53°
18
74°
51°
19
75°
50°
20
77°
53°
21
78°
51°
22
77°
56°
23
79°
55°
24
81°
56°
25
82°
57°
26
82°
57°
27
81°
56°
28
82°
57°
29
81°
57°
30
79°
55°
1
77°
50°
2
67°
44°
3
67°
41°
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 67° to 92°, with overnight lows between 41° and 71°. The average high for September is 79° with an average low of 56°. 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.