S
M
T
W
T
F
S
26
65°
53°
27
67°
51°
28
74°
43°
29
73°
54°
30
70°
54°
1
66°
53°
2
58°
50°
3
68°
43°
4
74°
46°
5
77°
53°
6
83°
56°
7
73°
54°
8
71°
51°
9
75°
55°
10
81°
62°
11
83°
56°
12
70°
48°
13
76°
53°
14
79°
57°
15
75°
49°
16
78°
55°
17
80°
67°
18
80°
65°
19
80°
65°
20
81°
70°
21
82°
67°
22
78°
64°
23
82°
67°
24
81°
69°
25
82°
68°
26
80°
69°
27
80°
65°
28
82°
64°
29
79°
65°
30
82°
64°
31
83°
67°
1
84°
68°
2
83°
68°
3
83°
69°
4
80°
68°
5
80°
68°
6
81°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Peru
Peru's May 2026 forecast shows daily high temperatures ranging from 78° to 84°, with overnight lows between 64° and 70°. The average high for May is 81° with an average low of 67°. 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 Peru. See also: June | July | August.