S
M
T
W
T
F
S
26
83°
77°
27
84°
77°
28
84°
76°
29
85°
77°
30
85°
78°
1
86°
78°
2
85°
77°
3
86°
78°
4
86°
78°
5
87°
77°
6
86°
78°
7
87°
78°
8
87°
77°
9
88°
78°
10
88°
78°
11
87°
78°
12
88°
79°
13
88°
78°
14
87°
78°
15
88°
79°
16
89°
78°
17
87°
78°
18
90°
77°
19
90°
76°
20
89°
76°
21
89°
77°
22
86°
77°
23
86°
76°
24
85°
76°
25
85°
77°
26
86°
78°
27
86°
76°
28
87°
76°
29
87°
77°
30
89°
76°
31
88°
77°
1
87°
78°
2
88°
77°
3
87°
78°
4
86°
79°
5
87°
78°
6
89°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cancún
Cancún's May 2026 forecast shows daily high temperatures ranging from 83° to 90°, with overnight lows between 76° and 79°. The average high for May is 87° 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 May weather will actually feel in Cancún. See also: June | July | August.
