S
M
T
W
T
F
S
26
91°
78°
27
91°
76°
28
92°
76°
29
91°
75°
30
92°
77°
1
90°
78°
2
90°
76°
3
89°
76°
4
94°
77°
5
92°
79°
6
93°
79°
7
93°
80°
8
91°
76°
9
94°
77°
10
93°
77°
11
92°
78°
12
91°
77°
13
93°
78°
14
92°
77°
15
91°
77°
16
95°
78°
17
94°
81°
18
93°
77°
19
94°
78°
20
97°
76°
21
93°
74°
22
93°
72°
23
93°
73°
24
93°
74°
25
94°
73°
26
95°
74°
27
95°
75°
28
94°
76°
29
94°
75°
30
93°
74°
31
93°
74°
1
90°
73°
2
88°
74°
3
88°
75°
4
90°
75°
5
90°
73°
6
91°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Santa María Huatulco
Santa María Huatulco's May 2026 forecast shows daily high temperatures ranging from 88° to 97°, with overnight lows between 72° and 76°. The average high for May is 92° with an average low of 74°. 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 Santa María Huatulco. See also: June | July | August.