S
M
T
W
T
F
S
26
85°
71°
27
92°
72°
28
88°
67°
29
67°
58°
30
62°
57°
1
62°
53°
2
76°
45°
3
81°
48°
4
84°
54°
5
89°
59°
6
70°
51°
7
73°
49°
8
77°
57°
9
88°
59°
10
79°
62°
11
77°
55°
12
85°
54°
13
90°
58°
14
92°
65°
15
90°
69°
16
92°
72°
17
88°
75°
18
90°
73°
19
81°
64°
20
77°
65°
21
80°
64°
22
81°
65°
23
82°
66°
24
83°
67°
25
85°
68°
26
85°
70°
27
84°
69°
28
89°
65°
29
87°
69°
30
86°
69°
31
84°
68°
1
83°
69°
2
85°
70°
3
88°
71°
4
88°
71°
5
85°
70°
6
84°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Santo
Santo's May 2026 forecast shows daily high temperatures ranging from 77° to 92°, with overnight lows between 64° and 75°. The average high for May is 85° with an average low of 69°. 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 Santo. See also: June | July | August.