S
M
T
W
T
F
S
26
74°
67°
27
76°
67°
28
72°
66°
29
73°
67°
30
72°
66°
1
74°
66°
2
75°
67°
3
75°
67°
4
74°
67°
5
78°
67°
6
75°
68°
7
75°
69°
8
76°
68°
9
76°
69°
10
74°
67°
11
80°
69°
12
79°
70°
13
78°
71°
14
75°
71°
15
76°
71°
16
76°
70°
17
75°
71°
18
76°
71°
19
76°
71°
20
76°
70°
21
77°
70°
22
75°
70°
23
77°
70°
24
75°
70°
25
74°
71°
26
77°
71°
27
75°
72°
28
76°
71°
29
78°
70°
30
79°
70°
31
77°
70°
1
76°
71°
2
75°
71°
3
76°
69°
4
75°
69°
5
75°
70°
6
76°
69°
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 75° to 76°, with overnight lows between 69° and 71°. The average high for May is 76° with an average low of 70°. 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.
