S
M
T
W
T
F
S
26
72°
53°
27
77°
59°
28
76°
60°
29
66°
54°
30
65°
48°
1
71°
47°
2
69°
51°
3
68°
54°
4
71°
55°
5
65°
58°
6
67°
59°
7
68°
58°
8
71°
56°
9
71°
57°
10
70°
58°
11
69°
57°
12
65°
50°
13
65°
49°
14
67°
50°
15
61°
51°
16
64°
52°
17
67°
52°
18
71°
48°
19
71°
52°
20
75°
56°
21
77°
57°
22
79°
61°
23
81°
59°
24
79°
59°
25
74°
55°
26
78°
57°
27
79°
58°
28
78°
58°
29
79°
61°
30
80°
60°
31
69°
58°
1
69°
57°
2
68°
57°
3
69°
56°
4
70°
57°
5
71°
59°
6
71°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Trieste
Trieste's May 2026 forecast shows daily high temperatures ranging from 68° to 81°, with overnight lows between 48° and 62°. The average high for May is 74° with an average low of 57°. 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 Trieste. See also: June | July | August.
