S
M
T
W
T
F
S
26
75°
48°
27
73°
52°
28
73°
50°
29
70°
54°
30
64°
43°
1
66°
37°
2
72°
45°
3
75°
48°
4
75°
50°
5
64°
50°
6
68°
59°
7
68°
54°
8
72°
52°
9
75°
52°
10
73°
52°
11
70°
55°
12
68°
43°
13
64°
41°
14
68°
45°
15
61°
48°
16
61°
50°
17
68°
46°
18
N/A
19
72°
50°
20
74°
53°
21
78°
55°
22
79°
57°
23
81°
58°
24
84°
59°
25
84°
58°
26
85°
61°
27
82°
57°
28
80°
59°
29
82°
61°
30
81°
60°
31
71°
61°
1
70°
60°
2
69°
59°
3
69°
59°
4
70°
60°
5
71°
64°
6
72°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Portoroz
Portoroz's May 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 50° and 64°. The average high for May is 77° with an average low of 59°. 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 Portoroz. See also: June | July | August.
