S
M
T
W
T
F
S
26
70°
54°
27
70°
52°
28
72°
55°
29
75°
50°
30
70°
57°
1
66°
54°
2
72°
54°
3
72°
54°
4
70°
57°
5
70°
57°
6
73°
59°
7
79°
59°
8
72°
61°
9
75°
55°
10
75°
61°
11
73°
64°
12
72°
63°
13
70°
55°
14
68°
55°
15
70°
59°
16
68°
55°
17
70°
56°
18
71°
56°
19
71°
58°
20
73°
61°
21
79°
62°
22
80°
63°
23
82°
65°
24
78°
61°
25
78°
63°
26
77°
62°
27
76°
63°
28
77°
62°
29
78°
63°
30
74°
57°
31
75°
58°
1
74°
60°
2
74°
58°
3
75°
57°
4
74°
57°
5
74°
58°
6
75°
60°
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 70° to 82°, with overnight lows between 56° and 65°. The average high for May is 75° with an average low of 60°. 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.