S
M
T
W
T
F
S
26
82°
55°
27
82°
57°
28
79°
55°
29
68°
52°
30
70°
46°
1
75°
50°
2
73°
55°
3
68°
54°
4
68°
48°
5
70°
46°
6
72°
46°
7
72°
46°
8
70°
52°
9
68°
54°
10
68°
55°
11
70°
54°
12
72°
52°
13
72°
52°
14
73°
50°
15
72°
50°
16
73°
48°
17
70°
48°
18
72°
48°
19
77°
48°
20
85°
57°
21
94°
61°
22
96°
61°
23
91°
60°
24
85°
59°
25
89°
60°
26
94°
63°
27
87°
66°
28
86°
64°
29
84°
64°
30
84°
64°
31
81°
61°
1
80°
62°
2
82°
61°
3
82°
59°
4
81°
60°
5
82°
60°
6
83°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Santiago do Cacem
Santiago do Cacem's May 2026 forecast shows daily high temperatures ranging from 80° to 96°, with overnight lows between 57° and 66°. The average high for May is 86° with an average low of 61°. 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 Santiago do Cacem. See also: June | July | August.
