S
M
T
W
T
F
S
26
89°
81°
27
89°
80°
28
88°
79°
29
82°
77°
30
82°
78°
1
83°
79°
2
88°
82°
3
88°
80°
4
89°
78°
5
78°
77°
6
79°
76°
7
78°
76°
8
77°
76°
9
77°
76°
10
78°
76°
11
77°
76°
12
78°
76°
13
79°
77°
14
79°
78°
15
80°
78°
16
80°
78°
17
79°
78°
18
79°
77°
19
78°
77°
20
78°
78°
21
80°
78°
22
78°
77°
23
79°
77°
24
78°
77°
25
79°
77°
26
80°
78°
27
80°
79°
28
79°
78°
29
80°
79°
30
80°
79°
31
81°
78°
1
80°
78°
2
79°
78°
3
80°
78°
4
79°
78°
5
80°
78°
6
80°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Roatan
Roatan's May 2026 forecast shows daily high temperatures ranging from 77° to 89°, with overnight lows between 76° and 82°. The average high for May is 81° with an average low of 78°. 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 Roatan. See also: June | July | August.