S
M
T
W
T
F
S
27
87°
78°
28
86°
79°
29
85°
80°
30
86°
78°
1
85°
79°
2
87°
76°
3
86°
77°
4
87°
77°
5
87°
79°
6
86°
78°
7
86°
76°
8
84°
76°
9
86°
77°
10
85°
75°
11
86°
75°
12
86°
76°
13
87°
75°
14
86°
75°
15
85°
76°
16
86°
76°
17
87°
79°
18
86°
78°
19
86°
78°
20
83°
77°
21
83°
77°
22
82°
78°
23
85°
79°
24
86°
78°
25
85°
78°
26
85°
77°
27
84°
77°
28
85°
75°
29
84°
76°
30
82°
77°
31
84°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Cancún
Cancún's October 2026 forecast shows daily high temperatures ranging from 82° to 87°, with overnight lows between 75° and 80°. The average high for October is 85° with an average low of 77°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Cancún. See also: November | December | January.