S
M
T
W
T
F
S
26
82°
69°
27
82°
70°
28
83°
70°
29
84°
69°
30
83°
70°
1
83°
70°
2
84°
69°
3
84°
70°
4
84°
71°
5
84°
70°
6
83°
68°
7
83°
70°
8
84°
69°
9
84°
71°
10
85°
71°
11
86°
70°
12
86°
70°
13
85°
71°
14
85°
71°
15
88°
70°
16
86°
71°
17
87°
70°
18
86°
71°
19
88°
70°
20
89°
72°
21
89°
72°
22
88°
71°
23
86°
70°
24
88°
70°
25
88°
70°
26
87°
70°
27
87°
73°
28
89°
74°
29
88°
74°
30
88°
72°
31
89°
72°
1
88°
71°
2
87°
71°
3
89°
72°
4
91°
72°
5
91°
73°
6
90°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Naples
Naples's May 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 68° and 74°. The average high for May is 86° with an average low of 71°. 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 Naples. See also: June | July | August.