S
M
T
W
T
F
S
26
86°
68°
27
91°
69°
28
93°
68°
29
89°
67°
30
87°
71°
1
88°
70°
2
91°
71°
3
75°
68°
4
87°
68°
5
90°
68°
6
90°
70°
7
91°
72°
8
93°
72°
9
93°
73°
10
94°
76°
11
93°
76°
12
92°
76°
13
90°
76°
14
92°
75°
15
93°
72°
16
93°
70°
17
96°
71°
18
91°
74°
19
91°
74°
20
93°
73°
21
94°
72°
22
94°
73°
23
90°
75°
24
89°
76°
25
91°
75°
26
87°
74°
27
87°
76°
28
87°
75°
29
88°
74°
30
87°
73°
31
88°
72°
1
87°
74°
2
88°
73°
3
90°
74°
4
89°
73°
5
88°
74°
6
88°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Estero Island
Estero Island's May 2026 forecast shows daily high temperatures ranging from 87° to 91°, with overnight lows between 72° and 76°. The average high for May is 88° 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 Estero Island. See also: June | July | August.