S
M
T
W
T
F
S
26
50°
34°
27
51°
35°
28
52°
35°
29
52°
37°
30
53°
36°
1
54°
40°
2
53°
38°
3
54°
39°
4
60°
43°
5
64°
40°
6
57°
36°
7
55°
40°
8
64°
46°
9
66°
46°
10
66°
43°
11
57°
39°
12
57°
41°
13
61°
46°
14
58°
45°
15
57°
46°
16
58°
47°
17
58°
46°
18
65°
40°
19
64°
43°
20
64°
42°
21
63°
41°
22
61°
40°
23
62°
41°
24
61°
41°
25
63°
42°
26
66°
42°
27
64°
43°
28
67°
42°
29
64°
44°
30
67°
50°
31
65°
45°
1
65°
51°
2
66°
49°
3
66°
49°
4
68°
51°
5
70°
51°
6
68°
48°
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 50° to 70°, with overnight lows between 34° and 51°. The average high for May is 61° with an average low of 43°. 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.