S
M
T
W
T
F
S
26
84°
71°
27
87°
69°
28
88°
69°
29
85°
69°
30
85°
71°
1
84°
69°
2
87°
71°
3
78°
70°
4
87°
69°
5
86°
69°
6
86°
71°
7
86°
72°
8
88°
73°
9
90°
75°
10
90°
77°
11
89°
77°
12
89°
77°
13
88°
78°
14
87°
78°
15
87°
74°
16
89°
72°
17
89°
73°
18
91°
73°
19
90°
73°
20
89°
72°
21
87°
74°
22
91°
73°
23
92°
75°
24
91°
74°
25
90°
73°
26
90°
74°
27
88°
73°
28
89°
72°
29
90°
73°
30
88°
72°
31
87°
74°
1
86°
75°
2
86°
75°
3
87°
76°
4
89°
76°
5
89°
75°
6
88°
76°
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 86° to 92°, with overnight lows between 72° 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 Naples. See also: June | July | August.