S
M
T
W
T
F
S
26
90°
73°
27
90°
72°
28
91°
73°
29
90°
72°
30
90°
72°
1
90°
75°
2
91°
79°
3
88°
77°
4
88°
77°
5
90°
75°
6
90°
75°
7
88°
79°
8
90°
78°
9
90°
77°
10
91°
78°
11
91°
77°
12
90°
75°
13
91°
73°
14
88°
75°
15
90°
78°
16
91°
79°
17
91°
79°
18
91°
80°
19
90°
78°
20
90°
77°
21
91°
78°
22
93°
75°
23
93°
76°
24
94°
75°
25
94°
74°
26
93°
75°
27
94°
74°
28
87°
77°
29
88°
79°
30
89°
79°
31
90°
78°
1
89°
78°
2
89°
79°
3
86°
78°
4
86°
79°
5
86°
80°
6
88°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tulum
Tulum's May 2026 forecast shows daily high temperatures ranging from 86° to 94°, with overnight lows between 74° and 80°. The average high for May is 90° with an average low of 78°. 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 Tulum. See also: June | July | August.