S
M
T
W
T
F
S
26
83°
66°
27
85°
64°
28
86°
65°
29
84°
64°
30
82°
64°
1
83°
65°
2
82°
66°
3
81°
66°
4
80°
67°
5
81°
67°
6
81°
66°
7
82°
67°
8
82°
67°
9
81°
66°
10
80°
67°
11
80°
67°
12
81°
66°
13
80°
67°
14
80°
67°
15
81°
66°
16
81°
66°
17
80°
67°
18
80°
67°
19
81°
66°
20
80°
67°
21
79°
67°
22
79°
66°
23
80°
67°
24
78°
67°
25
79°
66°
26
79°
67°
27
80°
67°
28
79°
66°
29
79°
67°
30
80°
66°
31
79°
66°
1
81°
64°
2
80°
63°
3
79°
63°
4
79°
64°
5
78°
65°
6
79°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Antigua Guatemala
Antigua Guatemala's May 2026 forecast shows daily high temperatures ranging from 78° to 86°, with overnight lows between 63° and 67°. The average high for May is 81° with an average low of 66°. 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 Antigua Guatemala. See also: June | July | August.