S
M
T
W
T
F
S
26
80°
52°
27
80°
50°
28
74°
54°
29
70°
48°
30
68°
49°
1
68°
46°
2
69°
48°
3
71°
47°
4
73°
50°
5
73°
55°
6
75°
54°
7
76°
54°
8
72°
54°
9
72°
52°
10
73°
55°
11
75°
57°
12
74°
59°
13
74°
57°
14
75°
53°
15
73°
53°
16
73°
54°
17
74°
52°
18
74°
52°
19
75°
53°
20
75°
55°
21
74°
56°
22
75°
55°
23
76°
56°
24
75°
56°
25
76°
57°
26
77°
57°
27
79°
58°
28
81°
58°
29
84°
61°
30
85°
63°
31
85°
60°
1
81°
58°
2
80°
60°
3
76°
59°
4
77°
59°
5
87°
60°
6
86°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mostar
Mostar's May 2026 forecast shows daily high temperatures ranging from 68° to 87°, with overnight lows between 46° and 63°. The average high for May is 76° with an average low of 55°. 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 Mostar. See also: June | July | August.