S
M
T
W
T
F
S
26
52°
44°
27
66°
40°
28
65°
42°
29
67°
46°
30
71°
50°
1
66°
50°
2
59°
45°
3
63°
45°
4
76°
57°
5
83°
61°
6
77°
60°
7
68°
46°
8
64°
42°
9
69°
51°
10
71°
52°
11
71°
54°
12
70°
55°
13
72°
54°
14
75°
53°
15
71°
56°
16
72°
55°
17
71°
58°
18
72°
59°
19
79°
59°
20
79°
58°
21
77°
60°
22
80°
60°
23
80°
61°
24
81°
60°
25
78°
60°
26
74°
59°
27
75°
61°
28
81°
62°
29
79°
62°
30
81°
61°
31
79°
62°
1
78°
60°
2
75°
57°
3
75°
56°
4
76°
56°
5
76°
57°
6
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Callao
Callao's May 2026 forecast shows daily high temperatures ranging from 59° to 83°, with overnight lows between 42° and 62°. The average high for May is 74° with an average low of 56°. 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 Callao. See also: June | July | August.
