S
M
T
W
T
F
S
26
90°
73°
27
91°
74°
28
87°
74°
29
87°
73°
30
88°
73°
1
90°
73°
2
91°
73°
3
91°
72°
4
92°
74°
5
92°
74°
6
93°
74°
7
91°
73°
8
90°
72°
9
90°
72°
10
90°
72°
11
91°
72°
12
90°
73°
13
N/A
14
92°
74°
15
92°
75°
16
91°
74°
17
89°
74°
18
87°
73°
19
89°
72°
20
88°
71°
21
88°
73°
22
89°
73°
23
86°
73°
24
87°
72°
25
87°
72°
26
86°
72°
27
87°
73°
28
88°
72°
29
86°
71°
30
86°
71°
31
87°
73°
1
86°
73°
2
87°
72°
3
87°
73°
4
88°
73°
5
87°
72°
6
87°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Mayagüez
Mayagüez's May 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 71° and 75°. The average high for May is 88° with an average low of 73°. 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 Mayagüez. See also: June | July | August.