S
M
T
W
T
F
S
26
88°
72°
27
88°
73°
28
88°
75°
29
88°
74°
30
88°
74°
1
88°
75°
2
90°
73°
3
88°
72°
4
90°
73°
5
90°
75°
6
88°
75°
7
88°
73°
8
89°
72°
9
90°
72°
10
90°
74°
11
90°
77°
12
90°
75°
13
88°
76°
14
88°
77°
15
90°
76°
16
90°
74°
17
90°
77°
18
88°
74°
19
90°
75°
20
90°
77°
21
90°
75°
22
90°
75°
23
86°
75°
24
90°
77°
25
90°
77°
26
91°
76°
27
89°
75°
28
89°
75°
29
89°
76°
30
89°
76°
31
90°
76°
1
90°
76°
2
89°
69°
3
87°
76°
4
89°
75°
5
88°
71°
6
89°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Juana Díaz
Juana Díaz's May 2026 forecast shows daily high temperatures ranging from 87° to 90°, with overnight lows between 69° and 76°. The average high for May is 89° with an average low of 74°. 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 Juana Díaz. See also: June | July | August.
