S
M
T
W
T
F
S
26
86°
68°
27
85°
66°
28
86°
64°
29
91°
80°
30
88°
80°
1
90°
77°
2
87°
78°
3
89°
79°
4
89°
78°
5
88°
77°
6
91°
77°
7
91°
78°
8
93°
80°
9
92°
79°
10
92°
79°
11
93°
80°
12
88°
79°
13
87°
80°
14
88°
79°
15
87°
80°
16
87°
80°
17
89°
79°
18
87°
80°
19
87°
79°
20
88°
80°
21
87°
80°
22
87°
78°
23
88°
79°
24
87°
80°
25
87°
80°
26
86°
79°
27
88°
78°
28
86°
80°
29
87°
79°
30
88°
80°
31
88°
79°
1
87°
79°
2
87°
80°
3
88°
80°
4
88°
79°
5
86°
80°
6
86°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Jaco
Jaco's May 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 77° and 80°. The average high for May is 88° with an average low of 79°. 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 Jaco. See also: June | July | August.
